I stayed at Raymond and Kate's, with my parents, both in their 70s for 2 weeks. The apartment is comfortable, spacious and with lovely light. Comfy beds and air con in main bedroom and living room, which was great on hot days.
The area feels very safe, with a police station just opposite and a juice bar next door, which is open late - if not 24 hours? Its also super close to the beach, you can see it from the windows if you turn your head. Supermarket, shops, bus stop and all you need for a good stay is right on the doorstep.
I was in communication with Kate and Raymond throughout, and we only had one little issue when the toilet broke. But this was handled immediately and someone came to fix it as soon as I informed them - so this only adds to the great experience that we had.. (and there are two toilets, so for us there was no problem - I only mention it here - to compliment the speed with which it was fixed!).
I have no reservations giving the apartment full marks and whole heartedly recommend it to future guests. My parents were also extremely happy and both said they would love to stay again, if they are to come back to Rio.
Enjoy :) and thanks to Kate and Raymond for having us :)