The Bar/Lounge at ibis Sao Paulo Paulista
Ibis Paulista's bar/lounge is referenced by expert writers. Of the 3 reviews tracked on TripExpert, 2 mentioned the bar/lounge, like Fodor's and Frommer's.
ibis Sao Paulo Paulista 
Fodor's
Frommer's
Fodor's "One of the best bargains on Avenida Paulista, all rooms at this large hotel feature queen-size beds and contemporary decor, with the focus on function, not beauty"
Frommer's "This is a no-frills hotel, so don't expect a mini-bar, room service, a large breakfast, or other amenities"
