The Bar/Lounge at NH Budapest City
The bar/lounge at NH Budapest City is endorsed by professional travelers. Out of 6 reviews tracked on TripExpert, 4 praised the bar/lounge, including Michelin Guide, DK Eyewitness and Oyster.
NH Budapest City 
Michelin Guide
DK Eyewitness
Oyster
Frommer's
Michelin Guide "Impressive atrium complete with cafe-bar"
DK Eyewitness "The bar is popular late in the evening"
Oyster "Decor is generic and lacking polish, but there is a modest array of amenities on-site including a fitness center, lobby bar, spa with sauna, and some meeting space"
Frommer's "Although the exercise room on the eighth floor is limited, it is beautifully executed with the most modern exercise equipment, separate changing rooms for women and men, a solarium (for a fee), and a relaxation room with beautiful lounge chairs"
