I always stayed at Suites Real 85, about a 5 minute walk to the Zona Rosa, where all the clubs and bars are in the tourist district. They also have a sister hotel Suites Real 93 more near the financial distrist. It is what they call an Apartahotel which a lot of businessmen use. I always liked it, nice breakfast and had a kitchen as well as a sitting room. and it usually was about 65 dollars a night. Googel there website.
KB