We had a fantastic time at Rejane's place. As the other reviews indicate, Rejane is very friendly and responsive and was very kind to accommodate requests I had.
The view is stunning and it's always different depending on the time of the day and the lighting. You never get sick of looking at it. It's a 10 to 15 min walk to restaurants and the beach, and it's a pleasant walk in a very beautiful setting, especially on the Ipanema side. It's even less to the lagoon where there's all sorts of amenities and where you can rent bikes for a really gorgeous ride. And with Uber or taxi, you can get to any bar and restaurant in the Ipanema area really cheaply.
Tip: the mirror in the main bathroom opens to the living room, so you can take your shower enjoying the view :-)
I'd definitely stay here again.