Peninsula Hotel in Istanbul
Kemankeş Karamustafapaşa Mahallesi, Kemankeş Caddesi No:34, 34425 Beyoğlu, Karaköy
Right on the Bosphorus, the Peninsula Hotel overlooks Hagia Sophia and the Topkapi Palace along with the wide river. There’s a buzzy rooftop restaurant, but our favorite is the elegant, airy, sublevel spa made with floor-to-ceiling marble, saunas, a luxurious indoor pool, lavish traditional Turkish baths, and calming relaxation rooms. The Holistic facial—60 minutes of brightening, smoothing, plumping magic with botanicals and antioxidants—is a must.