We spent 20 days (world cup) at Claudio's apartment and we enjoy very much.
The area (Leblon) is fantastic, very safe and full of any service a tourist needs, banks ,supermarkets, very good restaurants, big shopping center, and few meters from the beach.
The apartment is nice and comfortable for 2 people. The doorman ,Antonio is very nice and help on every problem you might have.
A nice kitchen allows to prepare any kind of meals. Nice garden to relax