The Bar/Lounge at Buenos Aires Marriott
Panamericano Buenos Aires Hotel's bar/lounge is mentioned by professionals. Of the 5 publications that we monitored, 3 acknowledged the bar/lounge, like Frommer's, DK Eyewitness and Star Service.
Buenos Aires Marriott 
Frommer's
DK Eyewitness
Star Service
Frommer's "Two other restaurants are located in the lobby: Lucíernaga, the main lobby bar where breakfast is served, and Tomo Uno"
DK Eyewitness "This twin-tower establishment has a gym, squash court, massage rooms, juice bar, beauty salon, and a 1,000-seater conference center"
Star Service "All units supply multi-line phones with voice mail, flat-screen cable TVs, minibars, high-speed Internet access (for a fee), full-length mirrors, brisk air-conditioning, blackout drapes and combination baths with toiletries, robes and hair dryers"
