Bosphorus Lounge (Mandarin Oriental Bosphorus)

Upscale lounge of Mandarin Oriental Bosphorus in Kuruçeşme, right on the water. Five Champagnes by the glass, including Mumm, Veuve Clicquot and Moët & Chandon, and about 17 by the bottle, from Moët and Mumm to Taittinger, Bollinger, Ruinart, Dom Pérignon and Cristal. Price level in 2026: a glass from around €55 ($60), bottles from around €335 ($370), none under €100. Open daily from 10 am until late; the same list is served at the hotel’s Olea & Bar.