A beautifully designed bourgeois hideaway, Kvartira Kosti comprises a stylish restaurant with views over Nevsky pr, a small handsomely designed bar, and a surprising tea salon tucked in the back, with a stained-glass skylight and elegant furnishings set amid a circular room. The menu features Asian-style noodle dishes, creative salads, risotto, fish and chips, and a full breakfast lineup.
The big draw, though, is the secretive setting. You need to reserve ahead, and then you'll have to call/text to receive a code and instructions that give access to the building. There's a plush apartment adjoining the restaurant, though you'll have to share the bathroom with the restaurant guests.