We stayed 4 nights at Rodrigo's apartment. It's in a brilliant safe location, with easy access to everywhere in Rio!
The flat itself is very nice - but at the time of our stay, the building was undergoing some renovation works, but this did not impact us. Its clear that this apartment is the best in the building.
The space is smaller than the photos suggest, but there is everything you should need with quality furnishings.
Just a note that if you are a light sleeper the apartment is next to a very busy and loud road - the window does little to block noise. We are deep sleepers so this did not impact the trip for us.
Thanks again Rodrigo!