Mario was an excellent host. He was extremely helpful in showing me around Copacabana and did this with no expectations. The fact that he is fluent in both english and portuguese was also quite helpful. The room was real nice, complete with my own bathroom, access to the viranda, a digital safe to store my valuables, and a key lock on the door. The building is very secure, with a gated entry, and a 24 hour guard on duty. Mario takes security very seriously which made me feel comfortable during my stay. I'd definitely stay at his place again.