Photos Luxury Hotel. Situated in the heart of Nisantasi neighbourhood, The St. Regis Istanbul provides signature 24-hour St. Regis Butler Service and elegantly decorated rooms with air con. The residence has an indoor pool as well as a terrace with city look at. Totally free WiFi entry is accessible through https://wikimapia.org/external_link?url=https://5starhotelsinistanbulturkey.com/