All good things go by three! On my trip through Brazil I had the pleasure to stay at Elisa's and Marcelo's place three times when I was in Rio. I can only recommend staying at their apartment! It's beautiful, you have everything you need and it's very central between all hotspots in Rio.
But almost more important than the apartment are the people living there! Elisa and Marcelo are great hosts, I always felt very welcome! They have the best tips to explore the city and are really helpful and generous people! I'm very happy to call them my friends in Rio now!