Pros:
-Marcio and Claudio are fantastically friendly, engaging, and helpful guys who made me feel welcome in their home.
-The location is perfect, just up the hill from a Metro stop and only blocks away from Copacabana Beach.
-The bedroom is good-sized, and the bed is very comfortable.
-Marcio makes a mean caipirinha, and breakfast was always excellent.

Cons:
-The common areas (kitchen and living room) are smaller than the pictures tend to suggest.

All told, Marcio and Claudio were wonderful hosts, and I definitely recommend that you check them out if you're looking for a great place to stay during your time in Rio.