We had a wonderful 4 night stay with Cristina and Affonso.
They were great hosts, very welcoming and helpful with information about Rio and the local area.
The view of Sugar loaf mountain and the sea from the balcony is the main selling point but the rest of the flat is smart and clean.
There are steep steps down to the apartment as it is built on the side of a hill, and no lift, so be prepared.
The Santa Teresa area is quite hip and arty.
Overall highly recommended.