As everyone else has already said, Karina's apartment is a cute, cozy space so very conveniently and centrally located to everything you need: supermarket around the corner, drug store across the street, Ipanme and Copacabana beaches both within 5-10 minutes walk.
Karina herself has been an attentive host who has been quick to respond whenever I had any questions or requests.
If you stay here, don't forget to ask her for her restaurant recommendations which are all great places to check out.