My friend and I enjoyed our stay very much; the neighborhood is arguably the best in Rio, with all kinds of stores and restaurants around, and the beautiful Leblon beach couple of minutes away. There is a nice pool in the building, and a decent small eatery from which you can order a poke bowl or a burger to the apartment.
The apartment itself is very nice, with two bathrooms and two ACs, fitting in quite a small but cozy place.
Tabas in some cases took a day or longer to respond, but eventually they resolved all our issues (with maintenance, or with items we wanted, as in an HDMI cable), and most of the time the experience was good.
On the downside: the internet was very sloppy some days, and there wasn't an obvious quick fix for this (Tabas said they'd contact the provider). Occasionally the internet was so bad that we had to go to the restaurant floor for online videoconferencing, and ask the wifi directions at the reception of the building.