Carla's apartment was great, I went on Nov 2018 with my wife and 2 kids (3 and 4yrs) and we had a great time. Close range to the beach (only 3 blocks) and plenty of great restaurants options nearby (Degrau, Bracarense, Albertos) and also the best Rio Bakeries (Capixaba and Kurt) besides a Mall (Leblon Design Center). I didn't experience any noise as mentioned by one of the reviewers below, it was actually very quiet which was great for the kids.
Carla is a great host, very communicative and her maid (Mira) is also very kind. The apartment is well equipped with a toaster, microwave, a very good fridge and we found even ice cubes ready for us when we arrived. I would definitely stay in this place again.