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Flex Mussels - UES, New York, NY

Flex Mussels - UES

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Visa Dining Collection

4.7 (2837)
$30 and under
Seafood
1431 3rd Ave, New York, NY 10028

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2 people
SunMonTueWedThuFriSat
7:00 PM
Booked 44 times today

About this restaurant

  • 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 Daily 4:00 pm–6:00 pm Dinner Mon–Thu, Sun 5:00 pm–10:00 pm Fri, Sat 5:00 pm–10:30 pm
  • Phone number
  • Payment options
    AMEX, Discover, Mastercard, Visa
  • Dress code
    Casual Dress
  • Neighborhood
    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, Bar/Lounge, Beer, BYO Wine, Corkage Fee, Counter Seating, Full Bar, Non-Smoking, Patio/Outdoor Dining, Wine

What 2,837 people are saying

Flex Mussels - UES reviews from people who’ve dined at this restaurant. Based on recent rating.

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
  • 4.7Service
  • 4.5Ambience
  • 4.4Value

NoiseModerate

Review summary

AI-generated from verified diner reviews
Flex Mussels - UES offers a "great dining experience" with "delicious mussels and oysters," creating a "charming atmosphere" reminiscent of a Parisian café. The "outstanding service" and "warm, friendly staff" enhance the "vibrant happy hour." While noise can be an issue, the overall experience is "amazing and inviting."
2,837 Reviews
  1. Michaela

    New York City5 reviews

    5.0

    Dined 3 days ago

    1. Overall 5
    2. Food 5
    3. Service 5
    4. Ambience 5
    Loved the restaurant, very cute, great service and food was delicious.

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  2. Ellen VIP

    New York City16 reviews

    5.0

    Dined 3 days ago

    1. Overall 5
    2. Food 4
    3. Service 5
    4. Ambience 5
    Love the restaurant! They took my favorite brunch item off the menu….very unhappy….the Shelly eggs Benedict! Our waiter even said that other patrons complained that it is their favorite!

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  3. Tucker

    Philadelphia3 reviews

    5.0

    Dined 5 days ago

    1. Overall 5
    2. Food 5
    3. Service 5
    4. Ambience 5
    Thank you for the great table. Thank you for remembering my girlfriend’s birthday.

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  4. Harlan VIP

    Chicago78 reviews

    5.0

    Dined 5 days ago

    1. Overall 5
    2. Food 5
    3. Service 5
    4. Ambience 5
    Fabulous neighborhood spot. Happy hour menu is great.

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  5. Trish

    New York City2 reviews

    5.0

    Dined 6 days ago

    1. Overall 5
    2. Food 5
    3. Service 5
    4. Ambience 3
    The ambience was great for a restaurant in the village. The Raw oyster selection was delicious and possibly the best pairing of oysters that I have tried thus far. Service was great, the host was extremely friendly and Jonathan my server was amazing !

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  6. Ryan

    New York City1 review

    5.0

    Dined on May 20, 2025

    1. Overall 5
    2. Food 5
    3. Service 5
    4. Ambience 5
    One of the best happy hours in the UES. All the food we had was delicious, and the service was great.

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  7. Linda VIP

    New York City1 review

    2.0

    Dined on May 19, 2025

    1. Overall 2
    2. Food 4
    3. Service 1
    4. Ambience 3
    Had to wait 25 minutes passed our reservation time. No apology or offer of a drink. Rude

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  8. Harrison VIP

    Orange County12 reviews

    5.0

    Dined on May 11, 2025

    1. Overall 5
    2. Food 5
    3. Service 4
    4. Ambience 5
    Ate here for Mother's Day dinner and it was absolutely fantastic. We had a reservation but the restaurant was busy so we had to wait maybe 20 minutes for our table. Recognizing the inconvenience, the hostess was profusely apologetic and ended up comping several items from our bill. We had the kale salad, crab guacamole, buratta salad, and parma mussels. Each dish was to die for. The buratta salad had 6 pieces of the best shrimp I've ever tasted. Highly recommend Flex to anyone looking for a unique and delicious dining experience.

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  9. Stephanie

    New York City2 reviews

    5.0

    Dined on May 11, 2025

    1. Overall 5
    2. Food 5
    3. Service 5
    4. Ambience 5
    One of my favorite places on the upper east!!!!!!!

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  10. Luis

    New York City2 reviews

    5.0

    Dined on May 9, 2025

    1. Overall 5
    2. Food 5
    3. Service 5
    4. Ambience 5
    This is a great restaurant with impeccable service. Mussels and oysters are unbeatable across NYC.

    Is this helpful?

FAQs

Flex Mussels - UES is rated 4.7 stars by 2837 OpenTable diners.

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

  1. Home
  2. United States
  3. New York City
  4. Manhattan
  5. Upper East Side

Make a reservation


Booked 44 times today
Google Map for Flex Mussels - UES

1431 3rd Ave, New York, NY 10028

Additional information

  • Cross street
    South East corner of 81st Street and Third Ave
  • Neighborhood
    Upper East Side
  • Hours of operation
    Brunch Fri–Sun 11:00 am–4:00 pm Happy Hour Daily 4:00 pm–6:00 pm Dinner Mon–Thu, Sun 5:00 pm–10:00 pm Fri, Sat 5:00 pm–10:30 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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  • Terms of Use
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