We stayed with Elisabeth and Mario for 8 days, and they were indeed terrific hosts.
We shared many interesting discussions and laughs, they also invited us for dinner once which was much appreciated. They also supplied us with a lot of help and tips for our stay in Rio.

We stayed in the big room with private bathroom, which was really comfortable.
The building felt really safe because of a 24 hr doorman, and the location was the best, just in-between Copacabana and Ipanema, 5 minutes from the beach.
We hope to be back soon !