Me and my girlfriend has a fantastic stay at Viviane's apartment in Copacabana,
Her brother was really helpfull at whole time during our stay aswell. Even keeping our bags for the day when we checked out and driving us himself to our airport transfer we need to catch later on in the day. All in all I would definatly recommend staying at this studio aprtment rather than the many beach front hotels that are at least twice the price. Great location (2 min walk to Copacabana and 10 mins to Ipanema) really clean and just overall a great place to stay in Rio.