"Americanized" Mexican food; not authentic. Happy hour was cool- margaritas were $3.50. It was okay, but nothing special. Also, the salsa tasted like a spicy version of marinara sauce. read more

This place was fantastic. Food was great. Drinks were great. Service was top notch!!!!

The food is bomb.com!!!! It tastes amazing and you get great service! It a very inviting and awesome environment! I definitely recommend it! Sergio Cisneros is a boss! read more

Went to Sergio's for dinner twice while we were visiting Klamath Falls for 4 days. This place never fails for service. The first time was for food to go, large portions, great tasting food. Omar is an excellent host, he also added a patio in the back, which he told me that my dog can also come with us next time, which is a big plus since she is part of our family, and we hate eating in a hotel room as we are on vacation. Thanks Sergio's we will always visit your restaurant every time we are up in the area! read more

The service was great but the food was only mediocre. Rice and beans lacked flavor and my pastor was a little over cooked.

Amazing! From the service to the food, everything was as it should be, Amazing. My husband and I both decided to try something new, so glad we did. We both ordered 2 very different seafood dishes. His was a crab and shrimp platter with Mexican rice, melted cheese and a white cream dip. I had a hot mixed seafood soup that was so filling and perfect to taste. The salsa and chips were always kept full along with our beverages. It was a pleasure to have the owner making rounds checking to make sure everyone was happy with their meals and personally gave me some advice on what to add and how to eat my dish. This place is an A+ restaurant. read more

Suggested by a local. Seated quickly, pre-bevved quickly & then it all crashed. Our menus were taken from the table without our order placed. 2nd waiter came by a few minutes later & took orders. Whike waiting, fajitas with a burnt smell were delivered to a table nearby. Our order arrived & I was so disappointed. I dispise refried beans (grew up with them & never cared for them), menu does not mention them as being on the plate - I would told them not to include them. I have never had runnier Chili Colorado, far more like soup than a gravy & the "chunks" of beef were about the size of my pinkie fingernail. We also had the Verde, again .. odd recipe- no flavor of tomatillos or jalapeños, not even green in color to try to trick you. When we let the waiter know our concerns, he copped a pretty arrogant attitude. Will not be returning read more

Fajitas are . Service was fantastic. I would visit Klamath falls just for this fine establishment.

Lived here for 2 years and I never tried this place till today. First impression is that it's very dark instead and small. Bar has two small tvs for watching games. Their chips and salsa are bomb.com!!!Im still munching on them while I write this. Unfortunately that's where it stops. Food came and presentation is bad. Most of the plate is beans, very watery beans. There's some sort of oil on top of the food, can't see it very well since it's dark, but I'm hungry so I'm gonna eat it. First bite of the cheese enchilada and I start chewing slowly....with a puzzled look. Something's not right. Took another bite and the cheese wasn't melted..yuck. I barely ate half the plate before asking for my check. Clearly disgusted , the owner asked if he can heat it up for me, which meant microwave, so I kindly declined, payed the check, and got the hell outta there. Will not go back......EVER! One of the worst dining experiences and one of the worst mexican food places in Klamath Falls. Only good thing is there chips and salsa.... that's it! Only reason they get 2 stars... read more

The food taste bland the service is slow it's not an authentic Mexican restaurant I would highly not visit this establishment.

Really good food here, went tonight with the family and had great service, someone always jumping in when it chips or drinks got too low. The only downside was the price was kinda steep for what I got, I got just a cheese quesadilla with nothing else and it was over $10. So just one tortilla and some cheese was that much. read more

During our ASCE Regional competition at Klamath Falls, our group of over 25 was desperately looking for a place that could accomodate all of us and stay open past 10pm. Even on such short notice, the staff at Sergios were able to host us all in the same room, merging tables as more of us arrived. The food was excellent (recommend their seafood cocktail!) and when they heard one of our members had a birthday they surprised us with a serenade at the end. Son los mejores! read more

Great food, vibe and service. Great mexican food and fast cooking! Good chips and slasa as well.

Went here tonight for Happy Hour, since the last time (about 6 weeks ago) was so good. What a disappointment!! Last time, we were greeted at the door like old friends, shown to the bar and offered food right away. This time, the staff barely acknowledged us. Although the margaritas were awesome, the happy hour appetizers tasted like they came from the frozen foods section; the tacos were cold, the mini chimichangas - also cold - were bland and the hot wings were way too spicy, chewy and tough. What was an even bigger letdown was that no one seemed to care. We mentioned it to the waitress and she just smiled politely and asked if we wanted another drink. The hostess just kind of looked blankly at my husband and the gentleman (owner? manager?) was more interested in power-washing his truck out in the parking lot than listening to guest comments. We'll go again, but if its like tonight, we'll not be back. read more

DO NOT EAT HERE!!! EAT AT LOS POTRILLOS!!! This place has the worst mexican food ever. They also charge for refills.. Too much money for the poor service and food. read more

The best Mexican restaurant in klamath falls! Authentic and classy. The food taste wonderful and the staff is so friendly. I would definitely recommend it my friends and family. read more

The food was so-so, but I'm picky when it comes to Mexican. I liked to be overwhelmed with really tasty rellenos and enchiladas. The service is good, but probably I wouldn't go back. read more

Good food at decent prices, friendly staff and nice portions. Unfortunately it was a bit noisy. Some might prefer a little more spice in their food. read more

Service is a 5, I had a chili colarado/verde/relleno plate that was excellent. My wife had enchilada Suizas which was also very good. Both came with soup or salad. Add happy hour margaritas, chips and salsa, and a cherry chimi for desert, and I'm gonna pop. Num. read more

Was in town visiting Crater lake-and this place was not good. My margarita was sugarless and sour even after asking to fix it. The food was bland and didn't have many options for vegetarians. Salsa and chips were good. The tortillas were too chewy, I feel like I've had better. read more

Ate dinner here once during a recent road trip up the West Coast. It was recommended by a local from Klamath Falls. The food was very, very good, with a good beer selection as well. If you are in the area (I live on the East Coast), I would definitely recommend this place! Wish I could go back! read more

This is one of my favorite Mexican food resturants. They have the best service of any resturant I have ever been in. My wife and I joke about how fast they get the chips and salsa to the table(safe bet it will be less than 30 seconds. They food is as good as it gets. All the staff is friendly and polite. read more

Great food! Great service. Family owned and very friendly. Our waiter was really attentive. I would definitely come here again if in the area. read more

Great service and food. They have a nice bar and TV area is the back. This restaurant also has a location is Colorado.

Phenomenal is all I can say. The chips taste amazing and that salsa has me wanting to double dip. I recommend the ranchero burrito. It had an amazing sauce that kept me wanting more. Combining it with a cheese quesadilla left my stomach full, something most restaurants fail to do. Finally, to top it off, I recommend the fried ice cream. Overall the food is good but the service keeps me coming back. You'll always see a friendly smile on Sergio Cisneros. read more

Very average food. Enchilada and chile rellano were ok. Husbands tampiquena was bland and very small portion of rice. Beans were barely warm. $16 should get better results. Will not return. read more

My wife and I travel extensively and this is my absolute favorite mexican-style restaurant anywhere. It's family owned and run, and the bulding, food, and atmosphere has that "family" feel to it. From the moment you walk in the door to when you are finished, they go out of their way to make sure you feel welcome. The service is excellent and the menu is extensive and includes what appear to be some "family" recipes. Try the tampipollo! It's their specialty and I order it half of the time we eat there. Prices are typically 8-15 dollars per plate. We take all of our out of town friends and relatives to Sergios and they always want to go back the next time they visit. I'd highly recommend Sergios. read more

I moved to Klamath Falls in 1993. At that time, there was one Mexican restaurant in K-Falls (cannot recall the name). I was from L.A., so definitely needed my fix of Mexican food. I went to that unnamed restaurant and was appalled at the food: salsa too hot, enchiladas like cardboard. That restaurant has since burned down. Riding down the main street one day, I noted that a new Mexican restaurant was opening. I began to salivate, my taste buds tingled. Every day I would pass the restaurant and look for an opening date. Finally, Sergio's opened and I scurried in for a meal. Ah! A real margarita. Ooh! Wonderful enchiladas rancheras. Sergio's since then opened a much larger restaurant called Sergio's Dos, and the first one was closed. The new Sergio's had a much more Mexican ambience and the food was still great. I go there every chance I get. The owner is Francisco and the restaurant is named after his son Sergio. read more

Sergio's has the BEST happy hour in town!!! The food is fantastic, the staff makes you feel like family... So much that I now have my parents joining me during the week! I highly recommend checking out this hot spot, you won't be disappointed : read more

Sergios is defiantly the best Mexican food in town! Excellent family oriented atmosphere. Top notch service. Amazing food and great people always make for an awesome lunch or dinner. Happy hour is always good too, free chips and salsa and mini burritos... who can complain? Thank you Sergios! read more

Very efficient service, really tasty food, price is right. We will make this a regular stop on the way through town....

Excellent carnitas - among the best I've had. The meat really shines here. Lunch special and a few tacos were well worth it. Service was good. I'd come back. read more

best Mexican Restaurant i have ever been to, it's so delicious, really anything on the menu is good from my opinion.

sergios gives monster servings of good food!

service was good. i went with my wife for lunch . i ordered the new york steak SANDWHICH medium rare. and what i got was a steak cooked Well Done and served on top of one slice of buttered hoagie bread. WTF! Ruined my meal..... i was soo excited to go eat there, and they dropped the ball big time. i didnt want to be a dick and complain about my meal, have them take it back only to have it returned to me with a nice fat layer of spit. so i bit my tongue and ate it. i know mexicans dont like to eat pink meat.... BUT I DO! so if i ask for my steak MEDIUM RARE i expect it. A Sandwhich is 2 Slices of Bread Amigos..... 2!!!!!! Uno..... Dos!!!! will i go back???.... Yes but only for their Happy Hour. read more