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    Margin Cafe Coffee Roasters

    4.5 (300 reviews)
    Updated 1 month ago

    Margin Cafe Coffee Roasters Photos

    Business Info

    MARGIN CAFE COFFEE ROASTERS ATMOSPHERE

    What's the vibe?
    Moderate noise
    Outdoor seating
    Dogs allowed

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    Recommended Reviews - Margin Cafe Coffee Roasters

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    Biscoff Latte ($5.50 - 12oz - iced)
    Ian A.

    I ordered the Biscoff Latte ($5.50 - 12oz - Iced). It's not punchy; rather, this coffee felt subdued and silky. It's not too sweet nor bitter. The aftertaste is a crumbly caramelized cookie. (Important: Cash is not accepted. Only card. Also, they have a 90 minute policy. If you want to stay longer than 90 minutes, management wants you to purchase more.) I arrived at Margin Cafe (Diamond Bar) on Thursday (around 12:15PM). Parking is easy. The lot is big. Staff is curt, busy, and business-like. Staff explained that the 12oz coffee and the 16oz coffee had the same number of shots; I chose the 12oz, so it wouldn't be diluted. My drink took six minutes and 36 seconds. As mentioned, the Biscoff Latte ($5.50 - 12oz - Iced) is not bad. It's not too milky. And it's not bitter nor too sweet. It's also fairly affordable compared to other quality spots. However, there's a lot of ice, so the drink vanishes fairly fast. The caffeine is not strong, but it's enduring. Regarding ambiance, Margin Cafe (Diamond Bar) is sleek but fairly unmemorable. There's about four electrical outlets. Also, there's customer internet with password. Unfortunately, the 90 minute time-limit feels constraining for this place to be a good study/work spot. Also, the music is fairly loud; it's like management wants to scare away loitering college students. Fortunately, there's a gender neutral restroom in the back. Overall, Margin Cafe (Diamond Bar) offers decent coffee. It's not the best, but it's an affordable, solid option. Location feels a little frugal, but there's sincere potential hidden in these walls. 4.4 out of 5

    Horchata latte (left), biscoff latte (right)
    Jasmine C.

    It is a cute coffee shop in diamond bar. Has a lot of unique drinks which I like. My husband got a horchata latte as he wanted a hot latte yet most of specialty drinks are not available in hot and I got a biscoff latte. We liked how the drinks were not too sweet but still had those unique flavors. It was our first time at the cafe and the person who worked there explained and recommended drinks for us which I was grateful for :) It is located in a plaza so there ate enough spaces for free parking

    Wifi
    Nicki A.

    We came here for a quick morning study date and enjoyed the ambiance of the space - it was spacious, quiet but with nice music, and had lots of outlets to plug our laptops into. The bathroom was also really clean! The servers were nice and accommodating, serving us even though their payment systems were down (they don't take cash but thankfully the systems worked before we left so we were able to pay) We got some baked goods and ordered Biscoff Latte and Vienna Latte with cream top. Baked goods were solid and the drinks were yummy and well-concentrated, not watered/sugared down. Would love to come back for another study date here!

    Xenia A.

    Came to this spot to do some work with my friend and it was a nice spot for a good cup of coffee and pastry. The seating was also quite comfy, I'm kind of a chair snob and hate when coffee spots have chairs that leave marks on your legs. The butter pecan iced coffee was pretty yummy as well!

    Biscoff Late
    Lexy A.

    This was my first time in Diamond Bar so I can't compare this spot to other shops in the area. However, I can compare to the coffee shops in LA. I got the Biscoff Latte and loved it!! They have whole milk and non dairy (no 2%). The latte was the perfect amount of sweet. The Biscoff flavor is there and not too overpowering. There is a good amount of indoor and outdoor seating. They have wifi as well. They have a sign that requests one drink per person if you're dining in. Also that if you are staying more than an hour, to order more drinks. Not sure how much this is enforced.

    Timmy S.

    This coffee cafe is located in a small plaza. I was in the area and stopped in for an iced drink on a near 100 degree afternoon. They have several outdoor tables (thanks, but not on this hot day!) and a dozen tables indoors. I ordered a Biscoff latte (only offered as an iced drink) and a slice of Biscoff cheesecake. The smiling young woman who took my order let me know she would bring it to my table when it was ready. It wasn't very busy but it took about 10 minutes for my order to be brought out. The Biscoff cake was really delicious. The Biscoff crust and sprinkles of crumbs on top were wonderful and the cheesecake was creamy, light, and slightly sweet. It has a whipped cream texture. I truly enjoyed this. The Biscoff latte was a bit of a disappointment. I could see it being made and a jar of Biscoff cookie butter was used as an ingredient (although I couldn't see how much). Oddly the latte visually looked like it had the cookie butter but there was no taste of Biscoff at all. The coffee flavor was very bold and was all I could taste. Fortunately, I really liked the taste of the iced latte even though the Biscoff flavor was completely absent - I still enjoyed it. I appreciated the signs they had up on the walls advising customers to be considerate and, if they were going to camp out with their laptops in the shop, to please, at least buy a second drink. It appeared to be effective as there were plenty of tables available for paying customers. 3.5 stars rounded up.

    Taken 8/24/2025
    Jennifer F.

    Fantastic cafe!! I searched coffee places near Diamond Bar and I selected this cafe for an early morning talk with my friend. I ordered an iced Blueberry Latte with soy milk and my friend ordered their Coconut Latte. Drinks came out fast and arrived on a cute small tray. There was plenty of seating. We had a great time catching up. The interior was beautiful and they even had a restroom! My drink was so delicious, it tasted like a blueberry muffin, but with espresso! I really enjoyed my time here, I can't wait to come back!

    Menu
    Edward C.

    A friend of mine had posted about this cafe and I've never known about it! Easily overlooked and definitely a gem. The owners are very friendly and willing to educate about coffee and their drinks. The Biscoff latte is unique and not overbearing. Plenty of indoor seating as well as some outdoor seating. Will definitely drop by more time allowing as it's in a convenient location. The interior is very cozy and well decorated. Good to enjoy coffee and do some work or read a book. Great place to relax and enjoy some good coffee.

    Almond croissant
    Sherry T.

    I've been coming here since they first opened and really enjoyed their coffee, drinks, and pastries. It's a cute coffee house with good amount of seating both indoors and outdoors. It's located in a plaza with lots of parking. This time I ordered the mango matcha (seasonal item), and it was A.Mazing! The mango puree was fresh and not too sweet. It paired so well with the matcha (which I have never had)! Both the Nutella and almond croissants were yummy I definitely recommend this place.

    Rho L.

    I might be the minority here but I wasn't impressed with Margjn. I ordered the black sesame latte and the black sesame croissant. The croissant seemed days old even after it had been warmed and the latte was very underwhelming in flavor. I may try to visit again and order different offerings.

    Coconut Latte w/ Oat Milk.
    Kevin M.

    A great coffee shop with quick and friendly service! I've come by to Margin Cafe a few times during a needed break time and place to chill to do some work on the computer. The cafe has adequate indoor and outdoor seating and plenty of parking spaces nearby. The few times I've come here there are usually customers already working or studying at the tables. It's very quiet and you can get plenty of studying or work done in peace. FYI, the location offers free WiFi for 90 minutes with one purchase minimum if you plan on staying. I've ordered a Coconut latte and Matcha latte during my few visits. The drinks were tremendous. The drinks were prepared quickly and I had no complaints. I've been drinking matcha lately and theirs was excellent. I'd bookmark Margin Cafe if you want a nice place to have a cup of coffee or study in Diamond Bar!

    Interior
    Guisselle D.

    I really enjoyed the vibe of this place. It's very spacious inside with lots of seating options so it's perfect for studying. We aren't from the area but happened to stumble across this hidden gem. We didn't realize they were closing in 10 minutes but been the the person working gave us her undivided attention and did not make us feel rushed or unwelcomed I wanted to try something I've never had before but it wasn't really my style. That being said, I am more than willing to come again to try a new drink and the pastries (they look soooo good!!!!)

    Rose petal latte
    Silver P.

    So far I love this cafe, a husband and wife coffee shop that gets their beans roasted locally and bake their own cakes Got their standard ice coffee and it's more of a darker roast which is perfect for milk additions. Currently tried their seasonal drink, the rose petal latte and it's not too sweet and perfect! Their jalapeño croissant is delicious and I also love that they're pet friendly. (Cats too!) Such a cozy cafe and the service is so calming and friendly. They also do collabs so I'll be looking forward to coming here again!

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    Page 1 of 8

    Ask the Community - Margin Cafe Coffee Roasters

    Do they close early on Saturdays? I'm here now and Yelp says they close at 5pm but it's closed now -_-

    Closed on Saturdays? Bummer?

    Only this weekend. We have to attend a memorial service of our family. We apologize for any inconveniences caused.

    Are there outlets available?

    Yes but it's limited.

    How does the painting option work?

    Painting package includes all material and supply, and a free refill on your drink. 2hr package is $38/person or $68/2 people.

    Don’t See Your Question? Ask Away!

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    Clean, well lit place. Service is excellent plus there is a…read morescreen to show all the customers the progression of your order. Tea is flavor just right. Brewed great.

    Convenient and Customizable -- A Solid Go-To My all-time…read morefavorite boba spot was Sunright Tea Studio, but unfortunately it's closed down, so I've been on the lookout for a replacement -- and this place has become my current go-to. What I love most here is the ordering experience. There are multiple large touchscreens where you can fully customize your drink -- sugar level, ice level, add-ons, substitutions, you name it. I almost always go for zero sugar, and the fact that I can do that easily is a huge plus for me. It's the kind of flexibility that modern boba shops should all offer. The portions are generous and the prices are reasonable, which is refreshing compared to some other spots in the area. Is it the most amazing boba I've ever had? Honestly, no -- but the ability to build your drink exactly the way you want it more than makes up for it. There's also a large display screen showing order status, so you always know when your drink is ready. It's a small touch, but it makes the whole experience feel smooth and stress-free. I'll be real though -- I probably drink more coffee from the Starbucks across the street than boba from here. At the end of the day, coffee feels like the healthier daily habit. But when I'm in the mood for something different, this place is where I'll be.

    Little Swan - cake bakery

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    (74 reviews)

    Today I needed to order a cake to celebrate gender reveal for my family. The cashier spoke with me…read morepatiently and clarified the details with me very well. She was very understanding to take the time to get my order right. I am very impressed with how the cake came out. The even free extra small gift with the cake! How adorable! Thank you! :) For people who didn't know how many possibilities this order could go wrong, let me explain. It was a long process to explain how I wanted the color outside the cake had to be neutral (not anywhere near blue or pink) while making sure that the cream inside is pink with strawberry flavor. I know it's an extra step for the staff to make sure that the baker doesn't mess up the color if the cream inside of the cake to be green or wrong color, which will confuse my family about what's the gender of the baby. Overall, the cake looks fabulous outside with gender neutral color, and the interior color is perfectly pink shade. And the layers of the cake stay in place when cutting. The baker didn't a great job! I will order future cakes from this shop again!

    We preordered a birthday cake for my mom's birthday, and the cake menu was so confusing. They only…read morehad pictures of their cake designs, and there were no actual descriptions of the cake flavors and ingredients. We had to flag down an employee for help. In the end, we decided on the chestnut cake and received a cake order slip that is used for proof of purchase and pickup. Their cakes are beautiful but pricey. We also purchased a box of their wife cakes. Their wife cakes are $1 each! There is a light discount if you purchase a dozen. It's hard to beat that price in today's economy.

    The Mugs - Both of us enjoy here!

    The Mugs

    (579 reviews)

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    Needed a place to get some work day and Outpost Coffee really came in clutch…read more There were plenty of parking available in a plaza which is shared with other businesses. I went on a weekday before noon and had no issues with finding a spot. For ordering, they had a kiosk inside with pictures for reference as well. It does accept American Express. After ordering, it only took a few minutes before it was ready. As for the atmosphere, there were a few other people, but they were mindful of noise. The music was also moderate, so I was able to focus without any earphones. There was plenty of seating from the center table to seating at the wall and even window seats. There were outlets available near seatings at the wall. There was also free WiFi as well. At first it indicated you would only have WiFi access for 1 hour. However, after the hour, I reconnected and it refreshed the timer. For my coffee, I decided to get an iced Dalgona latte. They provided many pieces of Dalgona. I did ask to get this at regular sweetness and ice. Overall, after the Dalgona dissolved with the ice, it felt like a good amount of sweetness. It was decent, but I've come back to try other drinks!

    Apparently all locations of the Mugs have been bought out and rebranded. The location in DB is now…read morerebranded as Outpost Coffee. It appears that they are still in their transition phase as there are still signs of "the Mugs" throughout, including the same menu and company info poster. I got the Banana Caramel latte and it is so good! Slight sweet banana flavor but doesn't overpower the espresso so it still tastes like a coffee drink. Plenty of seating for working and just hanging out. Parking is plentiful, staff is nice, just wish the noise of the refrigerator case wasn't so loud so I could enjoy the background music.

    Dang Good Ice Cream - $6 Cute ** Scoop with Black Sesame

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    (202 reviews)

    If you're looking for the best ice cream in Rowland Heights, you have to check out Dang Good Ice…read moreCream. This place seriously stands out from other dessert spots in the area because of their unique Asian-inspired ice cream flavors. We tried the ube ice cream, Vietnamese coffee, and black sesame, and every single one was packed with flavor and not overly sweet. The ube was super creamy with that perfect nutty sweetness, and the Vietnamese coffee had a rich, bold taste that you don't usually find at a typical ice cream shop. If you're feeling adventurous, they also have durian ice cream, which is hard to find anywhere else nearby. The shop itself is clean, modern, and has a really fun vibe -- definitely a great spot if you're looking for a cute dessert place in Rowland Heights. Staff was friendly and helpful with recommendations, especially if it's your first time trying some of these flavors. Honestly, this is one of the most unique dessert spots near Colima Rd and easily one of the top ice cream shops in the SGV. Whether you're craving something classic or want to try something new like Asian flavors, this place delivers. Highly recommend if you're searching for: Asian dessert in Rowland Heights unique ice cream flavors that you cant find anywhere... or just a really good late-night dessert spot We'll definitely be coming back to try more flavors!

    We just had dinner at Mama Lu's Dumpling House in Rowland Heights. We decided to have ice cream at…read moreDang Good Ice Cream. We lived yhe Dang Good Durian and the Uber Ube flavors. Service was fast, friendly and efficient.

    Margin Cafe Coffee Roasters - coffee - Updated May 2026

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