First and foremost, I only talked with André online, he and his brother Fabio own a few apartments and rent them out and manage them and Fabio was the one who met me and my girlfriend when we arrived in Rio.
We were allowed to check in a bit earlier than advertised and Fabio was supernice, showed us the ropes and stayed in contact for the duration of out stay. We were also allowed to check out a bit later which was nice as we could have lunch at our favorite place in Botafogo before leaving.
Nothing to complain about whatsoever concerning our interaction with Fabio and André, they are gentlemen and I would recommend their services to anyone.

The apartment was also very nice, clean, bigger than it looks on the pictures (at least in my opinion) with everything you need to make your stay comfortable.
The washing machine and rack to dry clothes come in handy, especially if you are like me and exercise while on vacation
The view is not great as you look into the apartments on the other side and the TV is quite small but if you come to Rio to watch TV in the apartment you are doing something wrong anyway and the view of Botafogo bay with Sugarloaf mountain is just outside the building if that is your thing.

In short, a good apartment managed by good hosts!