The place is very overpriced, there are many terraces nearby with even better views. The stairs to the terrace are a separate attraction, we somehow climbed up, but it's even harder to go down. Prices are above average.
The best view of the Bosphorus, unless you live in the same Radisson with the same terrace!
There are a lot of places during the day, it's better to book in the evening, I made us a table for dinner via Google.
The kitchen is 8/10, although we may just not have understood / appreciated something, since we do not eat such food all year round
I went up to the terrace, there is a showcase with fish. The smell was very terrible, not fresh fish. We told the staff about this, to which they replied that this was normal, that is, the fact that the fish has a rotten smell is normal..... go to other places.