I was in this room for just 2 days and loved it! As a single traveler I felt safe, the self-check-in was super easy, and it was very clean!
The streets can get noisy but when you close the windows it's fine. The neighborhood is very local, easy to get around in, and less crowded than Bairro Alto for example.
The host is very nice, and provided a lot of information on how to go about the city, where to eat, what to see, etc. It's a cool place to stay especially if you will do a lot of sightseeing and don't need a living room.