The Bar/Lounge at Hilton Berlin
The bar/lounge at Hilton Berlin is recommended by professional travelers. Of the 8 publications that we monitored, 2 acknowledged the bar/lounge, including Oyster and Star Service.
Hilton Berlin 
Oyster
Star Service
Oyster "The hotel has a spa with an indoor pool and saunas, a lobby bar and lounge, several on-site restaurants, 24-hour room service, and even a convenience store and a hair salon"
Star Service "Premium rooms fill the top floor, but the associated private lounge is anchored on the less panoramic ground floor, just across from reception"
