We stayed in Claudio's apartment for 12 days, during the world cup period. In the bottom line, we couldn't ask for a better hosting experience.
The apartment is located in a great place (Near the Metro station, 2 blocks from the beach, Supermarket just across the street). It is very pleasant, clean.and well decorated.
As people below wrote here, Claudio is really a perfect host. He fulfilled every small request in no time, and always did it with a smile.
For instance, He moved one of the TV's from the bedroom to the living room, so we could all watch the matches together. He filled our refrigerator with all kind of goods and even refilled it once again. On the day we took a trip outside Rio, He brought a cleaner that made the apartment look like new again.
Therefore, we strongly recommend to choose this apartment if you are looking for a place in Rio.

Claudio, Thanks for everything!!