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KOYN Japanese

KOYN Japanese, 38 Grosvenor St, London

4.4
RESTAURANT RATING: 
EXCELLENT
4.4 out of 5 (300 Ratings)
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0.8 miles Dominion Theatre London
About KOYN Japanese
The Spotlight on KOYN Japanese

Elegant Japanese Dining in the Heart of Mayfair

KOYN Japanese is a modern and sophisticated restaurant located on Grosvenor Street in London’s upscale Mayfair district. Inspired by the duality of Mount Fuji, KOYN blends traditional Japanese cuisine with contemporary flair, offering a refined yet energetic atmosphere. Just a short walk from major music venues and central London hotels, it’s a stylish pre-show spot for concert-goers seeking high-quality sushi, robata grill dishes, and standout cocktails.

Why Concert-goers love it

KOYN’s central location makes it a convenient choice for anyone heading to a show nearby. The sleek décor and ambient lighting create a lively but not overly noisy environment—perfect for conversation before the music starts. Guests appreciate the quick yet attentive service, making it easy to enjoy a full meal without feeling rushed. KOYN also offers à la carte and tasting menu options, ideal for both casual or elevated pre-show dining.

Who this Restaurant is great for

  • Groups of friends looking to share plates in a trendy setting
  • Solo travelers who want to dine at the sushi counter or bar
  • Couples planning a romantic night out around a concert
  • Fans wanting to kick off the night in a buzzing, fashionable space
  • Budget-conscious music fans can enjoy lunch specials or smaller plate options

What People Say

Guests rave about KOYN’s “stunning interior,” “fresh and inventive sushi,” and “impressive attention to detail.” Many reviews highlight the robata-grilled dishes and standout cocktails as must-tries. The warm, knowledgeable staff and seamless service earn consistent praise, with diners noting how well-timed everything is—especially important before heading to a gig. The restaurant’s dual concept of 'Midori' (garden) and 'Magma' (earth) dining rooms adds a unique, immersive touch to the experience.

Areas for Improvement

While the ambiance and food are top-tier, some guests mention that prices can be on the higher side—especially for larger groups. Seating may feel a bit close during peak hours, so booking ahead is recommended. Also, the menu leans toward premium options, so those seeking a quick bite may want to stick to lighter dishes.

The Bottom Line

KOYN Japanese is a stylish, central spot where great food meets efficient service—perfect for concert-goers looking to elevate their night out in London.

Average Price
£41 and over
Cuisine
Japanese
Opening Hours
Lunch
Tue-Sat 12:00-14:30
Dinner
Mon-Sat 17:30-22:30
Sun 17:30-21:30

KOYN Japanese Customer Reviews

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TripAdvisor Traveler Rating

KOYN is #6460 of 26636 things to do in London

2 of 5 stars2 out of 5
By: Pete O, Brentwood, United Kingdom
Mon 14 Apr, 2025
l The service and environment are very good, but the food is very disappointing. The food we received was overpriced by at least 25%, the portions small and not what I expected although it they...

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5 of 5 stars5 out of 5
By: Pallavi T
Sun 6 Apr, 2025
l We had a wonderful dining experience at Koyn London Thai Restaurant yesterday. There were six of us, and we all opted for the tasting menu, which was absolutely delicious – full of flavour, generous...

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1 of 5 stars1 out of 5
By: busybee8877, Derby, United Kingdom
Sat 15 Feb, 2025
l This place is extremely underwhelming. Food is bland. Service is very meh. Not enough trip advisor reviews to get a good idea of what it is going to be like so had to take one for the team. I do not...

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KOYN Japanese 38 Grosvenor St, London