Gustavo is a great host, very responsive over WhatsApp and his English was flawless.
The location is excellent- right between the two major beaches in Rio. We almost didn't believe the pin on the map. The walk to the start of Ipanema beach is about 2 minutes, and less than 10 minutes for Copacabana.
The place is not very spacious, but could easily accommodate two couples. The second bed is part of the living room space, so going from the main bedroom to the bathroom involves passing through that space.
The decor involves a lot of glass and mirrors and can get a bit disorienting thinking there's another room.
Take heed when checking out to make sure the main building doors are all open before leaving so you don't lock yourself in by accident.