Karina's apartment is exactly what we were looking for. In the perfect location right near Ipanema and Copacabana beaches. There is also a supermarket across the road.
The apartment is also great with a comfortable bed and everything else you need including air conditioner and washing machine.
Karina is also the perfect host and was available all the time and also very helpful with great advice on where to eat and places to go. I would definitely recommend this place and will stay there again next time I'm in Rio.