Great atmosphere, food, and wonderful services. Our families of 12 were at this restaurant and we loved the experience.

Atrocious Service. Avoid This Restaurant. My girlfriend and I came here for a celebratory dinner, and the service completely ruined what should have been a special evening. After finishing our meal and requesting the bill, we were ignored for an entire hour. Our waiter repeatedly walked past our table and continued serving every table around us without once checking on us or bringing the bill. After waiting an unbelievable 60 minutes, I finally had to flag him down just so we could pay and leave. Because of the appalling service, I left a small tip. Instead of apologizing for abandoning our table for an hour, the waiter sarcastically asked, "Only ___ euros?" The entitlement and complete lack of professionalism were astounding. The waiter with the mohawk was a serious problem. I created a Yelp account specifically to warn others about this experience. I have never felt so blatantly ignored at a restaurant, especially while watching the same waiter attentively serve everyone around us. We will absolutely not be returning. If you value even a basic level of service or respect, I strongly recommend going somewhere else. read more

My husband and I chose Mar do Inferno for our anniversary after hearing it was one of the premier dining experiences in Cascais. Unfortunately, it ended up being the most disappointing--and most expensive--meal we've had during our month in Portugal. The experience got off to a poor start. The hostess wasn't welcoming, and when I politely asked if we could sit closer to the window, I was told those tables had been reserved weeks in advance. We had also made a reservation for our anniversary, so that was disappointing. We were seated behind a pillar instead. Throughout the evening, not a single member of the waitstaff smiled. They all looked unhappy to be there, which created a surprisingly cold atmosphere. None of the staff ever came by to ask how our meal was, and no one acknowledged our anniversary. The restaurant itself wasn't nearly as elegant or luxurious as its reputation suggests. Aside from the lobster tank, the décor and atmosphere felt rather ordinary. To make matters worse, our view overlooked a wire fence and a parking area instead of the beautiful ocean setting we had expected. There were also several odd service issues. I ordered a gin martini. They said they were out of green olives, so I requested a lemon twist instead. The drink arrived with black olives and a lemon twist, which was confusing. As for the food, the complimentary bread with the crab pâté was excellent and easily the highlight of the meal. Unfortunately, everything after that was underwhelming. The sea bass was bland and forgettable, and the vegetables were overcooked to the point of being mushy. What made the evening especially disappointing is that every other restaurant we've visited in Cascais has been wonderful. Friendly, smiling staff checked on us, made us feel welcome, and served memorable meals--often at much lower prices. Given Mar do Inferno's reputation and premium prices, we expected an exceptional dining experience. Instead, we left wondering how it has earned such glowing reviews. I genuinely hope management takes a close look at the service, atmosphere, and food quality, because right now the restaurant simply doesn't live up to its reputation. read more

Hubby's Birthday Dinner - we celebrated my husbands birthday in Portugal this year ! I was so happy to see that Yelp had a presence in Portugal so while planning the trip I started book marking all the cool exciting places I wanted to check out ! Sooo I was so happy to find Restaurante Mar Do Inferno! It had gorgeous views of the Atlantic Ocean and the best seafood ! We made our reservation online before leaving California. It was easy and had an English and Portuguese option. We arrived and once we got there we were greeted warmly and seated quickly . There were all these fresh seafood options that you could pick from in live tanks ! Service was top tier !! Our waiter was funny and very entertaining! He warmed up even more as the evening progressed! We had the best view of the sea and ambiance was lovely ! We ordered the seafood platter - langoustines, lobster, prawns, sea bream, potatoes in a garlic butter sauce !! Everything was SO FRESH!! So delicious !!! Great wine selection especially European wines and cocktails too !! Hubby loved it and we definitely will come back next time we are in Portugal!! read more

Restaurante Mar do Inferno - Fresh catch - Portuguese Near Me - Cascais, 11

We booked Mar do Inferno for our anniversary after hearing it was supposed to be a fantastic five-star, high-end experience. Unfortunately, it was a disappointment from the moment we walked in. The hostess seated us behind a pillar and did not offer much warmth. I asked if we could possibly have a table closer to the window, but was told those tables had been reserved weeks ago. We had also reserved in advance, specifically for our anniversary, so that was frustrating. The atmosphere was also underwhelming. Nothing felt especially elegant or memorable. Even the view was disappointing -- more parked cars, fencing, and clutter than beautiful oceanfront dining. The fanciest part of the room was probably the lobster tank. The service throughout the meal felt cold and joyless. None of the staff seemed happy to be there, and no one checked in to ask how our meal was. It felt oddly tense, like everyone working there was having a terrible day. The food did not make up for it. We ordered the sea bass, and it was very unremarkable -- bland and lacking flavor. The vegetables were overcooked and mushy. Honestly, the best part of the meal was the crab pâté with bread served before the main course. No one acknowledged our anniversary, despite the reservation being for that occasion. We have been dining along the coast for over a month, and this was not only the most expensive meal we've had, but also one of the most disappointing. Other restaurants we visited had warmer service, better food, better views, and a much more welcoming atmosphere -- often for less money. For a restaurant that presents itself as high-end, Mar do Inferno needs to seriously step up its service, hospitality, atmosphere, and food. Based on our experience, this was nowhere near a five-star meal. One star. read more

I don't think I have ever gotten worse service anywhere. The large man that served us could not have been more indifferent towards us. We watched 2 other tables get seated and nearly finish their meals before we got our food. I am a former chef, so I know what the hard skim on top of our dishes meant - that they sat in the window while he catered heavily to other customers. What a disappointment!! read more

The seafood tray for two was beyond delicious. Went here last July 2025. Staff, ambiance and food was excellent.

The location of the restaurant is great if you are looking for oceanfront dining experience. But don't expect too much of the rest, and be aware of potential attack of the flies. We ordered the Salada, Caril Lavagante, the Pregado Dase, and the Sangrias(red and white). Only the Sangrias was good IMHO. The flies were extremely annoying because they kept attacking our foods. The waiters seemed to get used to it. read more

Our group of five had lunch at this restaurant on 25 January. Four members of the group ordered raw oysters, and ALL four became ill afterwards with high fever, vomiting and severe abdominal cramps. The fifth person, who did not eat oysters, remained completely fine. We informed the restaurant promptly and submitted a complaint through the official Portuguese Livro de Reclamações. While the restaurant initially engaged, they denied any connection, requested medical documentation, and ultimately just stopped responding altogether... The whole experience resulted in our entire household being affected all at the same time, causing significant distress and two full days of missed work and school. Our elderly family friend got quite sick, used to be a regular customer there, he didn't even get an apology. We made repeated attempts to resolve the situation amicably and provided supporting documentation of the impact, but no resolution was ever offered (our total bill was approximately €380). Extremely disappointing, recommend to AVOID. read more

Excellent seafood, service, views, and ambiance. Located in a very scenic area by the sea. Highly recommend to experience an amazing seafood meal. read more

We really enjoyed this restaurant. The views are amazing, the food and the service were fast and our waiter spoke Spanish which was a relief. The pasta was out of this world. Hope you come and enjoy read more

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Excellent view of the waterfront. There were 6 of us for lunch and the service was exceptional. The clams and the fresh cheese were excellent. I would also recommend the sea bass grilled. The wine list was extensive and reasonable for fine dining. Will return on my next visit to Cascais. read more

Restaurante Mar do Inferno - Our lunch wine, really good! - Portuguese Near Me - Cascais, 11

This place seems to be more view/ambiance than anything else~we ordered the seafood rice (basically a paella, so to speak) and red sangria. We both enjoyed our food and sangria, but weren't floored by it either. I'd definitely come back again if we were staying in Cascais, but it was a bit of a hike from Lisbon and didn't really feel worth it bc there are many, many outstanding seafood spots throughout Portugal. The view is the biggest draw here imo and that's okay bc there a lot of ppl who care more about ambiance/decor/views than their actual food...perfect spot for that crowd bc it's something you won't forget! read more

Restaurante Mar do Inferno - Portuguese Near Me - Cascais, 11

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Great food and great service. Located beautifully along side the cliffs. I would definitely recommend trying this place out. read more

Restaurante Mar do Inferno - Grilled fish and paella - Portuguese Near Me - Cascais, 11

One of the better ocean fronting restaurants on the toad from cascais to Guincho and within walking distance from Cascais old city. You can pay more for a Michelin star but it won't be a much better experience. The wait staff was very flexible. They turned a 2 person in to 1 portion meal at a good price. Outdoor seating to watch the sunset. read more

Really delicious food at first the one fella said they had no room for us and I believe it's the owner or the owners daughter Mariana squeezed us in. Highly recommend this place. A bit pricey but great. I suggest you call for reservations. read more

Very touristy. Average food and a very long wait to get it. The "oceanfront" view leaves much to be desired. There are far better places to eat in this area. read more

Excellent food with a great view. Reserve an outdoor table to watch the sunset if you can. Four of us split two two-person platters and felt that it was more than enough food. Everything tasted great. read more

Worst customer service ever. Let me start by when me and a friend walked in the first thing their server said was do you want to see the menu first before taking a seat, basically saying that we look broke for this restaurant. We said no that we will take a seat and look at the menu. We go ahead and take a seat and 20 min pass and non of the server's attends us. Another couple sits down next to us and the server brings them bread to the table and bring there drinks mind you we've been sitting in our table 20 min trying to get attention from them and none of the server will come to the table. Customer service totally awful. read more

3.25 stars. This restaurant is located near Boca do Inferno (Hell's Mouth) in Cascais. Make sure you get some good views of some incredible landscape before or after eating here. Overall, this is a good restaurant with some very fresh seafood items that you can view yourself before purchase. We actually did not do that which was probably a mistake as there were some very tasty looking items ordered at other tables. What I will say is that the wine selection was good, the clams we ate were absolutely perfect (better than a similar dish at Ramiro in Lisbon) and I thought the sea bream was nice if not a little bland. Make sure to brush up on your Portuguese when you order here or you might get a couple of odd looks/slightly less friendly service. read more

The prices on the menu have no bearing on what they will charge you when you get your check. We ordered a tiny amount, a few soups and a few individual bacalau of 2 eur each, which were supposed to be a total of about €20. They charged me €43. when I complained they insisted that was right and basically I just had to pay and leave. read more

Very nice restaurant right on edge of and overlooking the Atlantic. Came in on a weekday for lunch and seemed like a lot of locals were eating here. Had the octopus which was served in a pan with olives, potatoes and onions. So good. Was only able to eat half and took the rest home. Would come back to this in a heartbeat. read more

Restaurante Mar do Inferno - Portuguese Near Me - Cascais, 11

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Lovely elegant dining room overlooking sea was marred by a large party of about 25 flies that had apparently made a reservation for the night. They stayed for about an hour into our dinner until they turned all lights fully on. It was very odd that the restaurant staff and other patrons seemed wholly unconcerned about this. I suspect it was not the first night of the flies reservation .Service was barely there . Overall food tasty and reasonable for quantity and quality. We started with fresh crab meat which was a generous portion but unflavored and unceremoniously just dumped in a crab shell .Main course was a massive grilled platter of adequately fresh one whole fish with an entire lobster multiply tiger shrimp mussels and smaller shrimp under 100 euro to share for 2 . Could certainly serve 3. Ended the meal with a horrific lemon pie which was about 90 percent poorly cooked meringue and a 100 percent inedible . Since Cascais is swimming with many other seafood restaurants with no flies , better food and much better service I would not return and am baffled at its high ratings. I suspect it's surviving on its former glory days but sadly I must report these appear long gone. read more

This is a seafood lovers heaven. Looks ordinary from the outside but it's really nice once you step in. White table cloths, nice cutlery and china and very friendly staff. I loved this place and would come back here in a heartbeat. There was about twenty of us at dinner and we had a fixed menu comprising of different types of seafood, starters and dessert. There was nothing that I did not like. Grilled sea bass for main and shrimps, tiny lobsters and clams for starters :-) yummm The sea bass was grilled to perfection and the cold seafood starters were fabulous. A few of us ended up emptying all the plates on the table with leftovers lol Staff were very attentive and we had two waiters for our table that came around regularly to top up glasses and check up on us. All in all a fabulous experience :-) read more

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Delicious seafood restaurant located a few minutes away from Boca do Inferno. The food, service, and ambience were all excellent! It was extremely easy to make a dinner reservation via email just a day prior, and they were super accommodating when we had to change the date AND when we arrived a full hour prior to our set time. Despite our last minute change of plans, they still managed to seat us on the patio (enclosed for the rainy weather) next to the windows so we could have a view of the ocean - which we weren't expecting at all. Definitely order one of the seafood platters for two. My fiancé and I didn't feel like fussing with crab, so we got the Special Platter (75 euros) which came with sea bass, tiger prawns, and lobster with potatoes and vegetables (according to the menu). The actual plate also had several pieces of shrimp. All of the seafood was cooked perfectly! The lobster was so tender and juicy, and had tons of bright orange tomalley (or roe?) to dip the meat in for a layered umami experience. The tiger prawn was also huge and succulent. And the shrimp! What a lovely surprise. It was cooked very well and also came with the head (easily removed), which had tons of flavor to be coaxed out. That was probably the most flavorful bite. The sea bass was also extremely meaty and moist. The olive oil with garlic at the bottom of the giant platter served as the perfect accompaniment to all of the seafood, as well as the potatoes and vegetables. It was easily more than enough for two people - you could probably have shared it among an additional 1-2 people if you got some more sides to share. This was a must visit for visitors of Cascais. read more

Restaurante Mar do Inferno - Special Platter (75€) - Portuguese Near Me - Cascais, 11

One of the best seafood restaurants in Portugal outside of Michelin stars experience. Top value for the money and everything is super fresh and the staff is very attentive. read more

Restaurante Mar do Inferno - Portuguese Near Me - Cascais, 11

OMG. This place was a-ma-zing. I had been a bit skeptical, because it was right by Boca do Inferno, and I thought it would just be a thing because of tourists. But some colleagues took me there for lunch while I was there for a work trip, and it was so, so good. We had some local white wine as a refreshment, and a couple appetizers. But the best part was the Polvo à Lagareiro, tender octopus tentacles in olive oil, potatoes and some other bits, that was absolutely delicious. This dish was so flavorful, tasty, and tender. I hadn't had octopus before, just calamari of various qualities, and it was much, much better than I had expected. read more

Excellent service nice people great view sangria was amazing One of the best in Portugal read more

Dang, the seafood was really good here. This place is the place to be if you go to Cascais. We were lucky to get in because we didn't have reservations but decided to drop by since it was a bit late for lunch. The place was full but they had one table available if we didn't mind sitting in the smoking room. We aren't smokers but we really wanted to eat here so we subjected our lungs to smoke and the food was worth it. We ordered the seafood platter plus garlic clams and octopus. Our server said we ordered too much food and suggested we drop the octopus. When the food came, it was a lot but I eat a lot and was craving octopus so we ended adding it back. Everything was delicious and I was very happy I got to dine there. We were also lucky because our server was super nice and spoke fluent English. We were very happy with our dining experience despite having to sit in the smoking room. read more

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I enjoyed the train ride out to Cascais from Lisbon and how there's a beach just foot steps from the station, Praia da Rainha. The walk from the station to Mar do Inferno had some other beautiful spots to stop and enjoy, including some a little hidden and off the beaten path. As for the restaurant, their whole crab was pretty good. The clams were solid, but I've had better elsewhere and have made better clams myself. I did not like their sangria, which was loaded with granules of sugar. The service I received wasn't the friendliest either. I did sit at the best seat in the house right by an opening out to the ocean. There was something perfect about eating seafood to the sound of the ocean. I'm glad I gave it a try, but I wouldn't come back to this restaurant again. read more

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Wonderful location overlooking the Boca do Inferno. Excellent service and an amazing selection of seafood and other Portuguese specialties. We had sole and octopus, both to be highly recommended. read more

Great restaurant right under a sight seeing destination. If you are going to Boca do Inferno, this is the most ideal spot for lunch. We got the $40 euro seafood platter to share and it was huge! You can probably share this among 3 or 4 people with the addition of some apps. Book a table with a view in advance. Inexpensive gift shop area near by as well! read more

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Incredible restaurant! Amazing service! Absolutely 5 star all around with an amazing view! Many fellow Americans find their way there also, and now we know why! A MUST when in Lisbon! read more

Very very rude service We tried to make a reservation and they didn't answer and when we arrived the hear waiter was so incredibly rude. I'd never come back. EVER! Seriously attitude problem. read more

Amazing, fresh seafood. Prepared simply and lovingly. Wait staff obedient and properly trained. Very good dining experience.

I came here for dinner alone on a weekend trip to Cascais. I arrived early (6pm) knowing that I didn't have a reservation and may have better luck early. When I arrived, there was no one at the door but this lady cleaning the floor who proceeded to ignore me when I said hello. Had to walk all the way through the place to find someone to help me. A waiter finally came and seemed annoyed that I didn't have a reservation but sat me anyway. Service was slow and inattentive, unlike what I had experienced in Portugal so far. In terms on ambience, there was no music playing, only a very annoying phone that wouldn't stop ringing and a lot of noise coming from the kitchen. Really weird Food was good, on the pricy side but good quality but don't think I would ever come back here. read more

Restaurante Mar do Inferno - Sea bass special (usually made for two) this is a portion for one - Portuguese Near Me - Cascais, 11

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What a gem, the service was excellent. Waiters friendly and wanting to assist you. Not even expecting a tip. Now to talk about the food. Barnacles, crab, giant prawns, clams and a delicious grilled sea bass. Pictures will tell the story. And don't forget about the white sangria. read more

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Consistently reliable food, with long term staff.. While the restaurant has evolved over the years, the family presence has maintained the comfortable and frambiance.. read more

Stunning views, great food, what more can a girl ask for . We had dinner reservations as it was highly recommended online. We arrived and the restaurant was busy on a Sunday evening. On entry, you see all the seafood on display. Staff were alright, we expected staff to be friendly and welcoming seeing as it's a tourist hotspot. We were offered bread with melted cheese which was unusual but tasty. We ordered the seafood platter for €75/80, it came with veg and potatoes and is one of the best meals ever. We weren't drinking on the night so the total bill was ~€90 Tips: 1. Book in advance - sea view 2. More expensive than most restaurants in Cascais 3. Take a long walk after, stunning views which is a nice spot for a proposal - should you feel inclined to read more

Restaurante Mar do Inferno - Seafood heaven - Portuguese Near Me - Cascais, 11

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Delicious food. Our car was broken into outside while we had lunch. All of our luggage was stolen. Watch out.