The Bar/Lounge at Hotel San Pietro
Hotel San Pietro's bar/lounge is acknowledged by expert reviewers. Out of 3 publications that we monitored, 2 praised the bar/lounge, such as Oyster and Fodor's.
Hotel San Pietro 
Oyster
Fodor's
Oyster "Cocktails are served in the lobby bar, and the lovely breakfast room has a rooftop terrace, where guests munch on takeaway meals (outside food isn’t allowed in rooms)"
Fodor's "The soothing lobby and large bar area are filled with plush sofas, antiques, and Art Nouveau works"
