Gustavo's place is amazing, yeah.
It is comfortable and has everything you might need for a short vacation in Rio.
But whats amazing is his communication and attentivness which surprised me to be one of the best experiences Ive had with hosts in AirBnB
I highly suggest you to stay here :)
Plus, leblon is very nice, the beach is way better than copacabans for example. the apartment is close to restaurants, bars, and a big 24 hours supermarket.