The location of the Airbnb is perfect. It's near a ton of restaurants, grocery story, money exchange and even walking distance to Copacabana beach and the mall. We never felt unsafe in the building. Alan was very responsive with every need we had.
The wifi worked great and we loved that Alan provided some basics like new bars of Dove soap, towels (you need to bring your own washcloths), paper towels, and cooking supplies.
While the apartment comes with a pull out couch it is not comfortable to sleep on so I wouldn't really recommend it for 4 adults, only 2 adults and young children.