Guilherme is a nice host. Besides of being accommodating he speaks English and that's a plus from me. His place is on the quiet side of Rio. If you like peace and quiet and are not a party animal this place is for you. Restaurants, pharmacies and supermarkets are just 2 minutes walk.
I think the place could be a bit more cleaner. Especially the private pool. The room is good too except there were loads of mosquitoes. So take your mosquito ointments if you're about to book.
Guilherme does island trips for R$200. I didn't take it but it seemed fun.
For the rest it was a nice stay.