I stayed at this apartment for two months so I feel qualified to leave and honest and very positive review. To begin with the hostess Giselle was a very pleasant and helpful person. She was happy to provide advice about living in Rio and always available at short notice if I had any questions.
Additionally, the apartment itself was great. It's small but definitely cozy and perfect for a couple of people. I would suggest that the shower could be improved since it's sort of integrated with the bathroom and occasionally ran out of hot water. But overall very minor inconveniences. It has really everything that you need in terms of comfort during a trip. And of course it bears mention that the location is unbeatable. It's a few minutes walk from Ipanema and Arpoador beaches, a little bit more to Copacabana. If you're looking to chill at the beach for a lot of your time in Rio, as I was, you can't to better. It's also close to the main centers of interest in Ipanema and Copacabana (10-15 mins walking) and very close to the General Osório metrô station which makes it really convenient to get to other areas of Rio.
I'd be happy to come back during my next trip to Rio!