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KOYN Japanese, London, Greater London

KOYN Japanese

4.6
4.6
225 Reviews
£41 and over
Japanese
A photo of KOYN Japanese restaurant

KOYN Japanese

4.6
£41 and over
Japanese
Mayfair

Make a booking

2 people
19:00
Booked 34 times today
Experiences are available.
  • Good for special occasions
  • Good for business meals
  • Charming
A multifaceted Asian dining destination in the heart of Mayfair. Discover our contemporary Japanese dining and our Izakaya style KOYN bar.

KOYN Japanese is located on our ground floor of Mayfair's Grosvenor Square and is a celebration of the timeless artistry of Japanese cuisine elevated by a contemporary approach.
The kitchen led by Executive Chef Rhys Cattermoul presents a menu highlighting the true essence of each ingredient, guided by a philosophy that embraces innovation while respecting tradition, to showcase the broad spectrum of Japanese cuisine through rich umami flavours and locally sourced produce.

KOYN's philosophy places value on subtlety and detail through an amalgamative lens where art, design, and textile traditions meet culinary craftsmanship.

Order delivery or takeout

Dining areas

Additional information

  • Dining style
    Fine Dining
  • Price
    £41 and over
  • Cuisines
    Japanese
  • Hours of Operation
    Lunch Daily 12:00–14:15 Dinner Mon–Sat 17:30–22:15 Sun 17:30–22:00
  • Phone number
    020 3535 2000
  • Website
    http://www.koynrestaurants.com/
  • Payment Options
    AMEX, Mastercard, Visa
  • Dress code
    Smart Casual
  • Executive Chef
    Rhys Cattermoul
  • Catering
    Kindly note we do not offer outdoor catering.
  • Private party facilities
    Please contact the restaurant directly on 020 3535 2000 or reservations@koynrestaurants.com for further information.
  • Location
    38 Grosvenor St, London, Greater London W1K 4QX
  • Area
    Mayfair
  • Cross Street
    Grosvenor Square
  • Parking details
    Street Parking
  • Public transit
    Nearest Tube Station is Bond Street <br />(Davies Street and turn right on Grosvenor Street)
  • Additional
    Banquet, Bar/Lounge, Beer, Cocktails, Counter Seating, Delivery, Full Bar, Gluten-free Options, Non-Smoking, Private Room, Takeaway, Vegan, Wheelchair Access, Wine

Experiences

  • Omakase Festive Menu

    £88.00 per person

    1 Nov 2024 - 30 Dec 2024
    Our dining destination and contemporary izakaya features Japanese cuisine that is authentic with a modern influence. Executive Chef Rhys Cattermoul showcases a broad spectrum of Japanese cuisine through delicate umami flavours and responsibly sourced ingredients. Leave it to us whilst you experience the Japanese tradition at its very best at KOYN, making every meal a celebration. Enjoy the festive season with our carefully curated Omakase Festive menu.

  • Omakase Feasting Menu

    £108.00 per person

    1 Nov 2024 - 30 Dec 2024
    Our dining destination and contemporary izakaya features Japanese cuisine that is authentic with a modern influence. Executive Chef Rhys Cattermoul showcases a broad spectrum of Japanese cuisine through delicate umami flavours and responsibly sourced ingredients. Leave it to us whilst you experience the Japanese tradition at its very best at KOYN, making every meal a celebration. Enjoy the festive season with our carefully curated Omakase Feasting menu.

Menu

View menu on restaurant's website

What 225 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
  • 4.6Food
  • 4.6Service
  • 4.4Ambience
  • 4.1Value

Noise • Moderate

Review summary

AI-generated from verified diner reviews
KOYN Japanese offers a refined dining experience with "great food and excellent service." Known for its lively atmosphere and prime location, it excels in creative dishes crafted from high-quality ingredients. Though some find portions small, the "presentation is visually stunning" and the staff attentive, ensuring a memorable visit.

225 Reviews

  1. Khalid

    London

    1 review

    5.0

    1 review

    Dined 3 days ago

    1. Overall 5
    2. Food 5
    3. Service 4
    4. Ambience 5
    Very well mannered staff, Polite, Attentive, Considerate. Delicious food as well.

    Is this helpful?

  2. Meltem

    San Francisco

    17 reviews

    vip
    3.0

    17 reviews

    Dined 3 days ago

    1. Overall 3
    2. Food 4
    3. Service 2
    4. Ambience 2
    I think food was good… atmophere was plain and formal The cutest one was the little car decorated outside inside plain for a holiday season… service was pretty bad.. one lady was looking all tables, we had to chase them asking for more sparkling water many many times.. they have to work On that hiring more people and attentive attitude. But this is not her fault, one server is not enough…

    Is this helpful?

  3. Barry

    London

    5 reviews

    vip
    5.0

    5 reviews

    Dined 5 days ago

    1. Overall 5
    2. Food 5
    3. Service 5
    4. Ambience 5
    A really excellent evening....food ans service exceptional

    Is this helpful?

  4. Hajra

    London

    6 reviews

    5.0

    6 reviews

    Dined 6 days ago

    1. Overall 5
    2. Food 5
    3. Service 4
    4. Ambience 5
    Love it, food was excellent: if you could like make the make rolls a little bigger please.

    Is this helpful?

  5. Lorna

    New York City

    1 review

    3.0

    1 review

    Dined on 23 November 2024

    1. Overall 3
    2. Food 4
    3. Service 2
    4. Ambience 4
    Food on the whole was very good and the restaurant was lovely however, we were disappointed by the service which was frustratingly slow. We were regularly left waiting for long periods for our wine to be topped up which given the prices being charged wasn’t in line with our expectations. We were also a little disappointed that the restaurant asked when booking if we were celebrating anything however failed to acknowledge our celebration during our visit.

    Is this helpful?

  6. Oleksandra

    London

    3 reviews

    vip
    2.0

    3 reviews

    Dined on 20 November 2024

    1. Overall 2
    2. Food 3
    3. Service 2
    4. Ambience 2
    First of all there was too cold inside because of broken heating. A manager advised us to leave our coats with us and to order tea. However., when you pay more than £100 per person, you would like to get the best service and ambience. A service was very slow and food was tasteless . Having poor menu they managed to cook tasteless food excepting sushi nigiri. I don’t recommend to visit this restaurant.

    Is this helpful?

  7. Emmanouil

    London

    1 review

    5.0

    1 review

    Dined on 17 November 2024

    1. Overall 5
    2. Food 5
    3. Service 5
    4. Ambience 5
    Excellent food and service. Top class restaurant. Highly recommended.

    Is this helpful?

  8. hashem

    New York City

    8 reviews

    vip
    5.0

    8 reviews

    Dined on 15 November 2024

    1. Overall 5
    2. Food 5
    3. Service 5
    4. Ambience 5
    Great selection of wine amazing sushi Highly recommend

    Is this helpful?

  9. AhuR

    London

    1 review

    4.0

    1 review

    Dined on 14 November 2024

    1. Overall 4
    2. Food 5
    3. Service 5
    4. Ambience 4
    The meals were amazing. The only thing is resturant was a little empty and a little cold. And the prices a little too high specially for the nigiri/sashimis. I would reccomend this restaurant in a crowdes evening for a bettwe atmosphere and definitely wear long sleeve☺️

    Is this helpful?

  10. Joshua

    London

    1 review

    1.0

    1 review

    Dined on 9 November 2024

    1. Overall 1
    2. Food 3
    3. Service 3
    4. Ambience 1
    Having eaten at Koyn two years ago, it was literally one of my favourite restaurants. Well not anymore. Very rude woman at reception, heating was broken, and it was freezing. I tried to move to the Thai restaurant downstairs where it was warm but they wouldn’t let me. I persevered and was very cold and paid a lot of money to be cold. Not impressed with the manager handling of the issue and will never go back.

    Is this helpful?

FAQs

KOYN Japanese offers takeout which you can order by calling the restaurant at 020 3535 2000.

KOYN Japanese is rated 4.6 stars by 225 OpenTable diners.

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

A photo of KOYN Japanese restaurant

KOYN Japanese

4.6
£41 and over
Japanese
Mayfair

Make a booking

2 people
19:00
Booked 34 times today
Experiences are available.

Order delivery or takeout

Google Map for KOYN Japanese

38 Grosvenor St, London, Greater London W1K 4QX

Dining areas

Additional information

  • Cross Street
    Grosvenor Square
  • Area
    Mayfair
  • Hours of Operation
    Lunch Daily 12:00–14:15 Dinner Mon–Sat 17:30–22:15 Sun 17:30–22:00
  • Price
    £41 and over
  • Cuisines
    Japanese
  • Dining style
    Fine Dining
  • Dress code
    Smart Casual
  • Parking details
    Street Parking
  • Public transit
    Nearest Tube Station is Bond Street (Davies Street and turn right on Grosvenor Street)
  • Payment Options
    AMEX, Mastercard, Visa
  • Executive Chef
    Rhys Cattermoul
  • Additional
    Banquet, Bar/Lounge, Beer, Cocktails, Counter Seating, Delivery, Full Bar, Gluten-free Options, Non-Smoking, Private Room, Takeaway, Vegan, Wheelchair Access, Wine
  • Website
    http://www.koynrestaurants.com/
  • Phone number
    020 3535 2000
  • Catering
    Kindly note we do not offer outdoor catering.
  • Private party facilities
    Please contact the restaurant directly on 020 3535 2000 or reservations@koynrestaurants.com for further information.
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