Photos Luxury Hotel. Situated in the center of Nisantasi neighbourhood, The St. Regis Istanbul features signature 24-hour St. Regis Butler Services and elegantly decorated rooms with air-con. The residence has an indoor pool and a terrace with city look at. Free of charge WiFi accessibility is available throughout the premises. https://wikimapia.org/external_link?url=https://en.wikipedia.org/wiki/Suite