Visuals Luxury Hotel. Situated in the guts of Nisantasi neighbourhood, The St. Regis Istanbul provides signature 24-hour St. Regis Butler Service and elegantly decorated rooms with air conditioning. The house has an indoor pool as well as a terrace with city perspective. Free of charge WiFi entry is obtainable through http://www.drugoffice.gov.hk/gb/unigb/5starhotelsinistanbulturkey.com/