El Cafe de La Opera is an amazing little restaurant next to the Royal Opera building. Its uniqueness lies in the fact that in the evenings, on the cafe's basement level, they put on a real performance, where you can enjoy virtuoso opera singing accompanied by a pianist. Real opera singers disguised as waiters will bring guests a glass of champagne, the main thing is that it doesn't shatter from their powerful voices :)
The prices in the restaurant are reasonable: they range up to 50 euros per person. According to the establishment's rules, each guest must order dinner, so limiting yourself to just one glass of wine won't work. As for the menu, you can find meat, seafood, and sweets on it - the choice is quite large.
The only thing to keep in mind is that for the evening hours it is better to book tables in advance. This can be done both in the cafe itself and in the hotel next door, which owns the establishment.
