I couldn't recommend a better place to stay in Rio ! The house is great in a wonderful place ! Vidigal is a really nice district, maybe the better to stay in Rio. Don't believe anyone telling you it is not safe. It is peaceful, nice, and there is everything you need around ! The house is on the top of the favella so you'll have to walk down every morning but it doesn't take long. At night you can walk up but it's kinda sporty ;) you'll prefer to take a taxi going up the hill or take a moto taxi from bottom for 3R$ max.
The house is clean, nice breakfast and music at morning and the view from the roof is astonishing!!! You can have bbq and your caipirinhas there :))
At last but not least, Carlos is a wonderful host ! He is nice and helpful, will always be there if you need advices or help. He is also a guide in Rio so you'll get all the info right from the source. We had such a great time with him and Luis. Thank you guys !