Prague's hotel bars fill a Gothic cellar, an Art Deco landmark and rooftops above the Vltava. The best hotel bars in Prague start at Black Angel's Bar, a 600-year-old Gothic cellar under Hotel U Prince off Old Town Square, with live piano and a Top 10 nominee for Best International Hotel Bar at the 2015 Spirited Awards. ALCRON Bar belongs to the Art Deco Alcron hotel, which dates to 1932, and Minus One sits under W Prague in the 1905 Grand Hotel Europe on Wenceslas Square. Golden Eye crowns the Fairmont Golden Prague, and Cloud 9 Sky Bar & Lounge sits 40 meters above the river. Book Black Angel's ahead. These are the bars we would start with.

A Prohibition-era-style cocktail bar set in a Gothic cellar beneath the Hotel U Prince on Old Town Square, with dim lighting and live piano. Its concept draws on a diary found during 2009 renovations and interprets 1920s–30s bartending traditions; it has been listed among the world's best hotel bars.
ALCRON Bar is an art deco cocktail bar inside the Almanac X Alcron Prague hotel on Štěpánská in Praha 1. The bar describes itself as an elegant, stylish room in central Prague, where first rate cocktails are mixed by real professionals in a modern setting. Its own list keeps drinks tied to the history of the original Alcron hotel, among them Alcron, Prima Balerina and Tank Olga, alongside creations such as Stumblin' In, Thirsty Dog and Night Cap. A low sugar mocktail range offers full flavor and no alcohol, including Almost Negroni, Bloom Berry and Bohemian Garden. A separate private bar can be reserved for celebrations and meetings. Lukáš Matulík runs the bar.
Cloud 9 Sky Bar & Lounge is on the ninth floor of the Hilton Prague in Karlín, 40 meters above the Vltava, with views across the city to Prague Castle. The list is led by fruit-forward signature cocktails, and chef Roman Dolejš cooks a Creole and Asian menu meant for sharing. It opens in the evening from Monday to Saturday.
Golden Eye sits on the roof of the Fairmont Golden Prague, above Pařížská in Prague 1, with panoramic views over the Vltava and the city skyline. The interior takes its cues from 1970s cosmopolitan style, brass and gold accents against dark toned wood and mirrored surfaces, worked up with the British studio Rima and McRae into something intimate and polished. The cocktail list looks to the Far East, blending tropical ingredients with Czech and Eastern European twists, while the kitchen cooks modern Asian food drawn from street food stalls across the region. DJ sets carry the evening, tuned to the occasion. Service runs Tuesday through Saturday and the dress code is smart elegant.
A multi-room cocktail destination below the W Prague hotel, with its own entrance directly off Wenceslas Square. It comprises distinct spaces including Poppy, serving a signature menu of reimagined classics, and Occulto, an intimate room where cocktails are presented as rituals, with drinks built on contemporary mixology techniques.
These are the hotel bars specifically. The full Prague guide ranks the best bars of every style, and the directory lists all 28 with a map and filters.