Sumahan on the Water, Çengelköy ( 00 90 216 422 8000, www.sumahan.com). 19th-century raki distillery- turned- boutique hotel on the Asian shore, with Zen rooms, a hammam, a highly regarded waterfront fish restaurant and a cute wooden launch to ferry you to Europe. At night, you can watch the Bosphorus suspension bridge flash pink and turquoise over the choppy water. Doubles from £158 B& B.