Kosen restaurant offers an exceptional culinary experience with a unique blend of traditional Japanese flavors and innovative techniques. The restaurant's quality of food is consistently high, with fresh and expertly prepared ingredients. However, some guests have noted that the portion sizes can be small, which may not be suitable for everyone's expectations.The pricing is on par with other high-end restaurants, but some guests have felt that it is worth the investment due to the exceptional quality and unique experience. The restaurant's innovativeness is reflected in its use of non-traditional ingredients and creative pairings, which sets it apart from other Japanese restaurants.The staff at Kosen is highly attentive and knowledgeable, providing excellent service throughout the meal. The atmosphere is upscale and trendy, with a cozy and intimate setting that makes guests feel special. However, some guests have noted that the service can be impersonal at times, which may detract from the overall experience.One issue that has been mentioned by several guests is the lack of attention to detail when it comes to hygiene practices. Some guests have reported that the chefs do not wear gloves while preparing food, which may be a concern for some guests.Overall, Kosen restaurant offers an exceptional culinary experience with a unique blend of traditional Japanese flavors and innovative techniques. However, some guests may find the portion sizes to be small, and the service can be impersonal at times. Despite these issues, the restaurant's high quality, innovative offerings, and exceptional service make it a must-visit destination for foodies and special occasions.