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Flex Mussels - UES, New York, NY

Flex Mussels - UES

4.7
4.7
2771 Reviews
$30 and under
Seafood
A photo of Flex Mussels - UES restaurant

Flex Mussels - UES

4.7
$30 and under
Seafood
Upper East Side

Make a reservation

2 people
9:30 PM
Booked 39 times today
  • Neighborhood gem
  • Lively
  • Good for special occasions
Direct importers of mussels from Prince Edward Island and oysters that taste like you're kissing the sea.

Additional information

  • Dining style
    Casual Dining
  • Price
    $30 and under
  • Cuisines
    Seafood, American, Canadian
  • Hours of operation
    Brunch Fri–Sun 11:00 am–4:00 pm Happy Hour Wed, Thu 4:00 pm–5:00 pm Dinner Daily 5:00 pm–10:00 pm
  • Phone number
    (212) 717-7772
  • Payment options
    AMEX, Discover, Mastercard, Visa
  • Dress code
    Casual Dress
  • Neighborhood
    Upper East Side
  • Cross street
    Between 3rd and Lexington Avenues
  • Parking details
    Street Parking
  • Public transit
    4, 5 & 6 trains to 86th Street, and M79 and M86 buses to 3rd Avenue.
  • Additional
    Bar Dining, Bar/Lounge, Beer, BYO Wine, Corkage Fee, Counter Seating, Full Bar, Non-Smoking, Patio/Outdoor Dining, Wine

What 2,771 people are saying

Overall ratings and reviews

Reviews can only be made by diners who have eaten at this restaurant

4.7
4.7 based on recent ratings
  • 4.7Food
  • 4.6Service
  • 4.5Ambience
  • 4.3Value

NoiseModerate

Loved For

  • New York City

    Seafood

  • Manhattan

    Seafood

Review summary

AI-generated from verified diner reviews
Flex Mussels - UES offers a delightful dining experience with "excellent mussels" and an array of sauce selections. Guests rave about the "amazing service" and recommend the fresh oysters and Thai mussels. The ambiance is vibrant and fits well with the Upper East Side vibe, although it can get a bit noisy.

2,771 Reviews
  1. Linda

    New York City

    7 reviews

    5.0

    7 reviews

    Dined 2 days ago

    1. Overall 5
    2. Food 5
    3. Service 5
    4. Ambience 5
    I've been to Flex many times, but this was my first visit to 3rd Ave. Wonderful as ever. Prettier space and the mussels are as delicious (and generous) as ever. Our server gave very specific, helpful suggestions and managed to satisfy my very precise dining companion. I have to return for happy hour.

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  2. judy

    Washington DC

    7 reviews

    vip
    4.0

    7 reviews

    Dined on November 24, 2024

    1. Overall 4
    2. Food 4
    3. Service 4
    4. Ambience 4
    New neighborhood restaurant. Crowded on a Sunday evening. Tables close together and hard to hear conversation. Food was interesting and flavorful.

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  3. Sachiko

    New York City

    2 reviews

    3.0

    2 reviews

    Dined on November 24, 2024

    1. Overall 3
    2. Food 3
    3. Service 3
    4. Ambience 3
    It was moderately crowded in the late afternoon on Sunday. We were seated at the two people table which was quite small for the amount of food we ordered. Also we did not have any space to put away our bags and winter coats so ended up sitting directly on our own coat and having to keep our bag on our lap. The mussels and burger were good but lobster roll was very disappointing. It tasted bland. The customer service was not bad. More space should be given to travelers for stuff.

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  4. Ellen

    New York City

    16 reviews

    vip
    4.0

    16 reviews

    Dined on November 24, 2024

    1. Overall 4
    2. Food 5
    3. Service 4
    4. Ambience 4
    Great for brunch! Beware of many families with their babies! Service is ok…nothing to rave about! Food could come warmer! Especially the Shelly eggs Benedict!

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  5. Rachael

    Philadelphia

    1 review

    5.0

    1 review

    Dined on November 23, 2024

    1. Overall 5
    2. Food 4
    3. Service 5
    4. Ambience 5
    Great service - every single person! Very appreciated & food was almost as good! The tuna tartare was recommended to us and it my favorite of what we ordered! It's a seafood based menu, a great spot for pescatarians. Only compliant was my cocktail. Highly recommend this place & glad I found it.

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  6. Heba

    New York City

    4 reviews

    3.0

    4 reviews

    Dined on November 23, 2024

    1. Overall 3
    2. Food 5
    3. Service 3
    4. Ambience 4
    We had to wait 15 minutes to be seated with a reservation.

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  7. Tuti

    New York City

    2 reviews

    4.0

    2 reviews

    Dined on November 22, 2024

    1. Overall 4
    2. Food 3
    3. Service 3
    4. Ambience 5
    Beautiful space with really great vibe and lighting. A bit disappointed by the food and drinks. Ordered a martini but the waiter had to come by twice to confirm how I wanted it and it still wasn’t very good. Had mussels and broccolini which were great but the branzino was a flop. The waiter said it was new on the menu…they should either change it or take it off. Over would come again but not be adventurous with the menu

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  8. Rena

    New York City

    5 reviews

    5.0

    5 reviews

    Dined on November 22, 2024

    1. Overall 5
    2. Food 5
    3. Service 5
    4. Ambience 5
    The food and service at Baba was exceptional. The preparation was beautifully executed and service was attentive and professional. I wish that they were open for a longer time.

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  9. Anne

    New York City

    58 reviews

    vip
    1.0

    58 reviews

    Dined on November 21, 2024

    1. Overall 1
    2. Food 3
    3. Service 4
    4. Ambience 1
    we were VERY disappointed - i called the night before to confirm a table in a quiet area if possible and was advised we'd be taken care of and that our reservation time should be OK for that - we arrived and the noise level was deafening and it was elbow-to-elbow crowded - we were offered outside seating but it was freezing - so we accepted an inside table and i had to wear my jacket and mittens for the entire meal plus i couldn't have a conversation with the person i was with due to the noise level - we specifically selected this restaurant for it's mussels but there was no way i could take off my mittens to eat them -and being a rainy night we were not able to go wondering around looking for another place to dine - i understand some restaurants get very crowded but i called the night before and was not advised properly - their entire upstairs had an event going on which decreased the seating availability significantly and if i'd been told that when i called the night before i would definitely NOT have selected this restaurant- our waiter, Jack, was kind and understanding, but all the "managers" we were involved with about the misinformation we received the night before didn't offer us anything for the inconvenience or anything to accommodate us any better - i hesitate to return even tho we enjoyed the mussels in the past

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  10. Jason

    Chicago

    2 reviews

    5.0

    2 reviews

    Dined on November 18, 2024

    1. Overall 5
    2. Food 5
    3. Service 5
    4. Ambience 5
    Outstanding from start to finish. A+. The Baba popup (18-22 Nov) was especially delightful.

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FAQs

Flex Mussels - UES is rated 4.7 stars by 2771 OpenTable diners.

Yes, you can generally book this restaurant by choosing the date, time and party size on OpenTable.

A photo of Flex Mussels - UES restaurant

Flex Mussels - UES

4.7
$30 and under
Seafood
Upper East Side

Make a reservation

2 people
9:30 PM
Booked 39 times today
Google Map for Flex Mussels - UES

1431 3rd Ave, New York, NY 10028

Additional information

  • Cross street
    Between 3rd and Lexington Avenues
  • Neighborhood
    Upper East Side
  • Hours of operation
    Brunch Fri–Sun 11:00 am–4:00 pm Happy Hour Wed, Thu 4:00 pm–5:00 pm Dinner Daily 5:00 pm–10:00 pm
  • Price
    $30 and under
  • Cuisines
    Seafood, American, Canadian
  • Dining style
    Casual Dining
  • Dress code
    Casual Dress
  • Parking details
    Street Parking
  • Public transit
    4, 5 & 6 trains to 86th Street, and M79 and M86 buses to 3rd Avenue.
  • Payment options
    AMEX, Discover, Mastercard, Visa
  • Additional
    Bar Dining, Bar/Lounge, Beer, BYO Wine, Corkage Fee, Counter Seating, Full Bar, Non-Smoking, Patio/Outdoor Dining, Wine
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