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Flex Mussels - UES, New York, NY

Flex Mussels - UES

4.6
4.6
2800 Reviews
$30 and under
Seafood

Make a booking

2 people
19:00
Booked 76 times today
Experiences are available.
  • Neighbourhood gem
  • Lively
  • Good for special occasions
Direct importers of mussels from Prince Edward Island and oysters that taste like you're kissing the sea.

Dining areas

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
  • Area
    Upper East Side
  • Cross Street
    South East corner of 81st Street and Third Ave
  • Parking details
    Street Parking
  • Public transit
    4, 5 & 6 trains to 86th Street, and M79 and M86 buses to 3rd Avenue.
  • Additional
    Bar Dining, Patio/Outdoor Dining

Experiences

  • Giuseppe's Pop Up

    3 Feb 2025 - 2 Mar 2025
    Join the team behind Wonderful Restaurant Group (Flex Mussels and Hoexters) for a 2 week pop-up, bringing your favorite Italian American classics to the table. We're excited for you to try the best Spaghetti & Meatballs you've ever had and Carm's Famous Parms. See you at Giuseppe's!
    Giuseppe's Pop Up photo

What 2,800 people are saying

Overall ratings and reviews

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

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

NoiseModerate

Diners' Choice Awards

  • New York City

    Seafood

  • Manhattan

    Seafood

Review summary

AI-generated from verified diner reviews
Flex Mussels - UES offers a vibrant dining experience with standout mussels, described by one diner as having "the best oysters and mussels in NYC." The service consistently receives praise for being "excellent" and "attentive," while the charming decor adds to the ambiance. Diners appreciate the varied menu and delightful desserts.

2,800 Reviews
  1. rose

    VIP

    Denver

    16 reviews

    5.0

    16 reviews

    Dined 2 days ago

    1. Overall 5
    2. Food 5
    3. Service 5
    4. Ambience 5
    Very attentive to our needs and always checking on the customers Oysters were great

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  2. Rena

    New York City

    6 reviews

    5.0

    6 reviews

    Dined 3 days ago

    1. Overall 5
    2. Food 5
    3. Service 5
    4. Ambience 5
    I went to the pop-up restaurant Giuseppe’s. The service was attentive, and the food was amazing. I had the burrata, which was perfectly pared with sundried tomatoes. The Branzino was one of the best I've had. I love that Flex Mussels continues to bring us such innovative options.

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  3. Sydney

    VIP

    New York City

    4 reviews

    5.0

    4 reviews

    Dined 4 days ago

    1. Overall 5
    2. Food 5
    3. Service 5
    4. Ambience 5
    The Giuseppe’s pop up was incredible! Classic old school Italian food that was delicious!

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  4. Kate

    VIP

    New York City

    3 reviews

    5.0

    3 reviews

    Dined 4 days ago

    1. Overall 5
    2. Food 5
    3. Service 5
    4. Ambience 5
    We attended the Giuseppe pop up and it was incredible! From the service (Taylor was awesome!) to the menu options and the ability to add a meatball to any dish - um yes please! Everything was just perfect and exactly what we were hoping for. Will definitely be back, not only for this pop up but for any Flex has in the future!

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  5. ruth

    VIP

    New York City

    39 reviews

    5.0

    39 reviews

    Dined 5 days ago

    1. Overall 5
    2. Food 5
    3. Service 5
    4. Ambience 5
    Food was fantastic Our server was great Hope you find a permanent location

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  6. Andrea

    VIP

    Washington DC

    26 reviews

    4.0

    26 reviews

    Dined on 6 February 2025

    1. Overall 4
    2. Food 3
    3. Service 5
    4. Ambience 4
    Fun pop up restaurant with lively atmosphere, friendly service and tasty, solid Italian food staples. The tiramisu was particularly delicious.

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  7. Ethan

    VIP

    New York City

    49 reviews

    2.0

    49 reviews

    Dined on 6 February 2025

    1. Overall 2
    2. Food 4
    3. Service 3
    4. Ambience 3
    We ate at the Giussepi’s pop up. It was fair. The menu was very boring. Billed as “Brooklyn Italian” it had a very limited menu. Given the restaurant downstairs, we were surprised that there were no clams Oreganata on the menu (but there was fried calamari, a bar staple that was not part of Brooklyn Italian cuisine). The only veal dish was marsala, and the parm was chicken. Both a disappointment and would be better reversed. The branzino was excellent. The cocktails had nothing to do with Brooklyn Italian unless you meant a nightclub rather than a restaurant. Food was fine, nothing special, and very expensive for what it was.

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  8. Karen

    VIP

    New York City

    280 reviews

    4.0

    280 reviews

    Dined on 5 February 2025

    1. Overall 4
    2. Food 5
    3. Service 4
    4. Ambience 4
    Love the Happy Hour $25 mussels/frites! Great value, and delicious plump mussels, as always. Also had the Boston Lettuce salad which was fresh, light and also delicious. Have to go back more often!

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  9. bill

    VIP

    New York City

    35 reviews

    5.0

    35 reviews

    Dined on 2 February 2025

    1. Overall 5
    2. Food 5
    3. Service 4
    4. Ambience 3
    Cobb salad fresh and full of components. but not very tasty due to bland dressing...the opposite is true for mussels: both Thai and Classic were wonderful. Deviled eggs are a good offset to inventI've cocktails and classic wine choices

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  10. Sharon

    London

    26 reviews

    2.0

    26 reviews

    Dined on 1 February 2025

    1. Overall 2
    2. Food 2
    3. Service 5
    4. Ambience 3
    We hadn’t been to Flex in a long time. Never at this new location. We were very disappointed. The portion of mussels was small and not as tasty as it used to be. My husband had soup he felt was short on clams. But the worst part was the smallest cocktail I have ever seen and the charge was $21.00. Of course I understand that the bar makes money for any restaurant but this was a shocking price. On the other hand the staff was very nice and accommodating. I want to make sure the restaurant owners know that.

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FAQs

Flex Mussels - UES is rated 4.6 stars by 2800 OpenTable diners.

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

Make a booking

2 people
19:00
Booked 76 times today
Experiences are available.
Google Map for Flex Mussels - UES

1431 3rd Ave, New York, NY 10028

Dining areas

Additional information

  • Cross Street
    South East corner of 81st Street and Third Ave
  • Area
    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, Patio/Outdoor Dining
  • Privacy policy
  • Terms of Use
  • Impressum
  • Cookies and Interest-Based Ads
  • Cookie Preferences
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