We stayed at Jean's apartment at Copacabana with my wife and our friends, and we liked it very much! Excellent location, easy to access all main attractions by bus (Corcovado, Sugar Loaf, Jardim Botanico, Ipanema beach). The flat is only 5-7 minutes walk from the ocean and is really cozy. Jean himself was very helpful, always available by e-mail, and a very pleasant guy to communicate, though we met only once. And he is great english-speaker, which is rare for Brazilians:))