The host is excellent and very gracious. !! As others have noted, the apartment is basic. Up 3 flights of narrow stairs. Technically only the bedroom is fully indoors but it was not that hot in rio when I was there and the AC worked fine. Wi-Fi and kitchen were fine too. Some mosquitoes but I forgot to use repellent first night.
Think beach shack with some AC, etc, and that kind of is what the apartment is. Neighborhood is noisy but that is true in much of rio. You are right next to a Metro entrance, though with limited hours. There is a good gym next door - but for real lifters not social hour. 3 blocks from a good beach area.
Good place for backpackers and similar types. For a basic place and a great host I would be fine staying here again.