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KOYN Thai - Thai Cuisine, Mayfair London - KOYN Thai, London, Greater London

KOYN Thai

4.4
4.4
78 Reviews
£26 to £40
Thai

Make a reservation

2 people
7:00 PM
Booked 11 times today
  • Good for special occasions
  • Fancy
  • Hot spot
A multifaceted Asian dining destination in the heart of Mayfair. Discover our fiery Thai dining and our Izakaya style KOYN bar.

Something exciting is coming to the cosmos of KOYN.
In June, our subterranean dining space will transform into KOYN Thai in collaboration with Bangkok born chef, Rose Chalalai Singh. The new restaurant will celebrate the flavours, spices and cooking techniques of Thailand.

KOYN Thai will sit underneath its Japanese counterpart, in the basement of the Grosvenor Street Residence, offering a menu that captures the essence of Bangkok, Chiang Mai, Phuket, and the central provinces.

Rose, known for her Parisian private dining restaurant, Rose Kitchen, and having catered for
some of the world’s greatest fashion and art talent - from Vogue Paris fashion events to The
Gagosian - will make her London debut at KOYN Thai.

Dining areas

Additional information

  • Phone number
  • Price
    £26 to £40
  • Cuisines
    Thai
  • Hours of operation
    Lunch Tue–Sat 12:00 pm–2:30 pm Dinner Mon–Sat 5:30 pm–10:30 pm Sun 5:30 pm–9:30 pm
  • Dress code
    Smart Casual
  • Parking details
    Street Parking
  • Payment options
    AMEX, Mastercard, Visa
  • Executive chef
    Rhys Cattermoul

What 78 people are saying

Overall ratings and reviews

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

4.4
4.4 based on recent ratings
  • 4.5Food
  • 4.4Service
  • 4.4Ambience
  • 4.1Value

NoiseModerate

Loved For

  • London

    Thai

Review summary

AI-generated from verified diner reviews
KOYN Thai offers "outstanding and delicious" traditional Thai cuisine in a sophisticated setting. The ambiance is "elegant," and the staff is "efficient and professional." While some reviews mention slow service or high prices, the restaurant's "authentic flavors" and "fantastic tasting menu" make it a must-visit for Thai food enthusiasts.

78 Reviews
  1. Amanda

    London3 reviews

    3.0

    Dined on February 25, 2025

    1. Overall 3
    2. Food 4
    3. Service 1
    4. Ambience 4
    Food was very good, service was very poor. Not many people eating and not many staff. The staff were nice but very slow, and drinks took ages to come. Also when I went into the women’s toilets the cupboard door was open with all the cleaning chemicals in.

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  2. Sid

    London2 reviews

    3.0

    Dined on February 18, 2025

    1. Overall 3
    2. Food 3
    3. Service 4
    4. Ambience 3
    An okay experience overall, nothing memorable or special. Cocktails were disappointing.

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  3. Furqan

    London11 reviews

    4.0

    Dined on February 14, 2025

    1. Overall 4
    2. Food 4
    3. Service 5
    4. Ambience 5
    A great evening in Valentines. Service was very good. Menu explained and felt comfortable. Decor and setting excellent for a romantic dinner. Would gave gift. 5 star however, the main which we had the Seabass wasn’t as good as the starters. Overall lovely place for a dinner with your partner

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  4. John

    Birmingham1 review

    5.0

    Dined on January 31, 2025

    1. Overall 5
    2. Food 5
    3. Service 5
    4. Ambience 5
    Taster menu was fantastic, worth paying supplement for lamb shank.

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  5. Corinna

    London12 reviews

    5.0

    Dined on January 30, 2025

    1. Overall 5
    2. Food 5
    3. Service 5
    4. Ambience 5
    Great ambiance as soon as you walk in. Had drink in the bar, very well stocked and knowledgable staff. From here we could see into the Japanese kitchen, though we were having Thai so we headed down to the Thai restaurant area downstairs. Again, there’s an open kitchen and a great feel to the room. Food was delicious! The serving staff were lovely, thoroughly enjoyed our evening!

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  6. Angela

    London6 reviews

    5.0

    Dined on January 25, 2025

    1. Overall 5
    2. Food 5
    3. Service 5
    4. Ambience 5
    Authentic Thai cuisine, honest prices. We really loved it and recommend it

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  7. Natasha VIP

    London16 reviews

    5.0

    Dined on January 20, 2025

    1. Overall 5
    2. Food 5
    3. Service 5
    4. Ambience 5
    Had a lovely lunch with my friend. Attentive and friendly service. Great ambience and food was quite authentic and delicious!

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  8. Mary VIP

    London18 reviews

    2.0

    Dined on January 5, 2025

    1. Overall 2
    2. Food 2
    3. Service 4
    4. Ambience 2
    The food was vaguely reminiscent of good Thai food. It tasted like corporate food. Not worth it. The music piped in was a deal breaker. Thumping whatever. Just no. The service was good but the restaurant was empty, as most places are right now, so can't say how it would be when they are busy. Jamavar, which this Indian group also owns, is great, but this is meh.

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  9. michael

    London5 reviews

    5.0

    Dined on January 3, 2025

    1. Overall 5
    2. Food 5
    3. Service 5
    4. Ambience 4
    pad thai noodles at its best! tks for a wonderful dinner!

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  10. Patrick

    New York City1 review

    5.0

    Dined on December 31, 2024

    1. Overall 5
    2. Food 5
    3. Service 5
    4. Ambience 5
    Very good & authentic food. Great service and atmosphere. Had a lovely evening!

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FAQs

KOYN Thai is rated 4.4 stars by 78 OpenTable diners.

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

Make a reservation

2 people
7:00 PM
Booked 11 times today
Google Map for KOYN Thai

38 Grosvenor St, London, Greater London W1K 4QA

Dining areas

Additional information

  • Phone number
  • Price
    £26 to £40
  • Cuisines
    Thai
  • Hours of operation
    Lunch Tue–Sat 12:00 pm–2:30 pm Dinner Mon–Sat 5:30 pm–10:30 pm Sun 5:30 pm–9:30 pm
  • Dress code
    Smart Casual
  • Parking details
    Street Parking
  • Payment options
    AMEX, Mastercard, Visa
  • Executive chef
    Rhys Cattermoul
  • Privacy Policy
  • Terms of Use
  • Cookies and Interest-Based Ads
  • Cookie Preferences
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