The service is excellent - they fulfill any desire - upon check-in they asked if we smoke - we settled on a non-smoking floor
If you have the opportunity to visit Istanbul and relax in a 5 star hotel. . my advice is to stay at the Swiss otel-Bosforus.
What impressed me more than this: the view from the window. . view of the bridge that connects Asia and Europe. . very beautiful! The food is very good, as is the service!