It was okay. You can get to Copacabana on foot. The apartment is big enough, internet worked flawlessly and it has a nice smart TV, but there are some issues.
First day we run out of water, and second day electricity went down. The neighborhood is a tightly packed favela, so it can get quite loud (even at night), a lot of barking dogs. To get to the nearest supermarket on foot you'll need to face 400 dirty steps up and down. There's no window in the living room or bedroom - only doors outside, so no way to get some light without noise. Also: on the photos there's a second TV in the bedroom, but it's actually not there (we didn't mind, but it might be important for some).