Absolutely a five star restaurant for me. We booked a promotional diner (they existed 25 years so a 3 course meal was 25 euros) but the quality was no less astounding than it would be in a normal situation. The portions are exactly right (so that the desert only just fits) and the the taste was just perfect. The somewhat higher price is clear from the moment you take the first bite and is definitely worth it. The service is good, they explain everything you have on your plate and are very nice to just have a chat with. The restaurant is very cosy. Do make sure you make a timely reservation and mention it if you are vegan. We are and this was no problem at all for the cook!