Claudio and Marcio's apartment is awesome, it's in the perfect location with the metro a 5 minute walk away and the beach a stones throw away. Copacabana is a 20 minute walk or a 5 minute cab ride if you want to enjoy the beaches because we definitely did.
Claudio greeted us at the apartment and showed us around and recommended some places to visit and eat. (You've got to try the breakfast café down the road!Caipirinhas)
Both were very helpful! Prompt responses with any requests or questions we had. A must stay if your visiting Rio!