The Bar/Lounge at Hotel Dei Mellini
The bar/lounge at Hotel Dei Mellini is endorsed by reviewers writing for major publications. Of the 6 professionals tracked on TripExpert, 6 endorsed the bar/lounge, like Frommer's, Fodor's and Oyster.
Hotel Dei Mellini 
Frommer's
Fodor's
Oyster
DK Eyewitness
Jetsetter
Star Service
Frommer's "It consists of two interconnected buildings, one with four floors and one with six; the top is graced with a terrace overlooking the baroque cupolas of at least three churches"
Fodor's "Amenities include a bar, cafeteria, solarium, gym, and rooftop garden"
Oyster "A slightly cheaper option nearby is the Visconti Palace Hotel, which also has a bar, though less period charm"
DK Eyewitness "A delightful roof terrace with a bar"
Jetsetter "Breakfast is served in a dining room overlooking a courtyard, but the property's crowning glory is the sunny roof garden, where you'll find loungers, colorful potted plants and views of Roman rooftops"
Star Service "Although rooms are plush, they don't rest on their laurels, offering WebTVs, multiple phones with voice mail, dual lines and data ports, high-speed Internet access (fee), well-stocked minibars, and good closet space with safes, robes and slippers"
