We had a really good time at Ana's place. She has a lovely house with a beautiful garden. Ana made us feel at home and had lots of advice for enjoying Rio. The breakfast is very tasty, as she makes bread herself.
The house is situated on the hill. The neighbourhood is ok, with pretty views of the city. It is a bit far to walk to Lapa or the metro station, so you should take a bus to get there (bus stops right in front of the house).
I would for sure recommend this place.