The apartment is really nice. We were 5 and felt very comfortable. Kitchen well equipped, used it for breakfasts mainly. Location is great. Copacabana beach is just two streets away. If you want to try other beaches, taxis are cheap and everywhere. AC cools the place and sleep was ok. There is a little noise from the street. But as this is top floor, it was not serious.
In a few words we felt great.