A nice and cozy place that's literally across the street from the Copacabana beach - the location is terrific! If you like running, you can wake up and go for a run along the beach to Ipanema - I loved it!
Rilza was a fantastic host, super helpful and very knowledgeable. She gave me so much information and showed me around the vicinity of the building. She also went through the trouble of getting maps, pamphlets and magazines about Rio. She was messaging to check that everything was fine during my stay, I was very happy with my stay at her place.
I found Rio to be quite safe and people are generally nice, but obviously some degree of caution/common sense is advisable when you're out and about - as with many other cities.