Our stay in this apartment was nearly perfect. There was only a small issue with the showers that has already been reported to the host and hopefully will be fixed. The host was very nice and responded promptly to our messages.
The apartment was clean, well furnished, with a tasteful décor and in the best location in the city. The beach is just a couple of blocks away. This area is very safe (compared to the rest of Rio, at least) and provides several good-quality options in terms of shops, restaurants, etc.
It was not one of the cheapest alternatives, but we were very satisfied with what we got for the price we paid. I definitely recommend this place for anyone going to Rio.