Gustavo's apartment was great. I stayed there with my husband and 5 friends during the World Cup. Even with 7 of us, we had plenty of space. The apartment was well cleaned before we got there, the wifi worked well, and they were extremely friendly at the front gate. The apartment is really close to the brt station, which is a good way to travel if you don't want to pay more for taxis. The taxis can be a bit pricy because this apartment is pretty far from the main attractions like Copacabana, Cristo, and Sugar Loaf Mountain. The only drawback from this place is the location away from the city center. It takes close to 45 minutes in a taxi and 1 hour and 30 minutes on a bus. All in all, I definitely recommend this apartment.
PRO TIP: be sure to visit the Mexican restaurant across the street. Seriously some of the best food we had while there, and the owner is incredibly nice.