Ronaldo's apartment is very well located in Ipanema, close to the beach, nice restaurants and shops. The neighborhood is very secure. Closest metro station is 5 minutes walking distance.
The apartment is clean, and well equiped (AC in living room and both bedrooms, wifi, washing machine). The doormen downstairs are very friendly even though they only speak portuguese. So in case of questions you must ask Ronaldo directly who is very prompt to answer you and give advices.
I'm recommending this place to stay.