We've stayed in Marco's place for about a month during our visit to Rio and loved it a lot! Maybe, the best location in town: it's clean, walkable, right by the beach and restaurants. Another huge plus during rush hour: the place is right by the metro.
In spite of being on an active street, the apt itself is quiet. It's spacious, perfectly clean, and well designed.
We've loved it and strongly recommend to other travelers :))