Nina's apartment was really amazing. We were in town for a conference at Jardins do Palacio de Cristal. Nina was super flexible with our check-in, check-out. The apartment itself is big and lovely, close to the subway, easy to come to from the airport.
You're a bit further away from the tourist center, but the neighbourhood is quiet and lovely. You'll have a much more authentic local experience there. There's a large supermarket less than a block away as well as restaurants.