The Library Bar Bar
Refined Quiet High End
The Library Bar
Harbiye
$$$$
English gentlemen's-club style bar with whiskey, cognac and live music six nights.
Reviewed by Mes Prestiges Editorial Team Last reviewed April 2026
Petit "O" is the lobby bar quietly running under Spago at St. Regis Istanbul. Where Spago plays for the rooftop crowd, Petit "O" leans into the St. Regis house tradition: a rotating signature Bloody Mary specific to each city. Istanbul's is the Misty Mary, turnip juice, red basil, rakı, and dry ice for the Bosphorus fog effect. International wine list and aged champagnes run alongside a classics-first cocktail program. Quiet, formal, and easy to get into, the antidote to Spago's reservation theatre.
Frequently Asked Questions
Quick answers about Petit "O" Bar, reservations, hours, dress code, and price range.
Where is Petit "O" Bar?
Petit "O" Bar is located in Nişantaşı, Istanbul, Mim Kemal Öke Cd. No:35, The St. Regis Istanbul, Nişantaşı, Şişli.
What is Petit "O" Bar best for?
Petit "O" Bar is especially popular for Business, Date.
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What's Nearby
3 Restaurant, 2 Bar, 1 Hotel · 6 places nearby, by straight-line distance
Distances are approximate straight lines, not walking routes. Check directions between stops.
Spago Istanbul
Restaurant · California-Asian Fusion
~10 m
Grey Food & Drink
Restaurant · Italian
~90 m
Dama Nişantaşı
Bar · Hi-Fi Bar
~90 m
Gurkan Sef Steakhouse
Restaurant · Steakhouse
~90 m
Park Hyatt Istanbul - Macka Palas
Hotel · Heritage Luxury
~100 m
The Wine Bar at Park Hyatt Maçka Palas
Bar · Wine Bar
~100 m