It was a nice experience and everything went well. Despite my short-term request, Andrei was really patient, also regarding the time between request and booking of the room.
Although I arrived late in the evening (around 11 p.m.), Andrei's mother welcomed me cordially, she showed me my room and all the other necessary things.
Everything corresponds the expectations and provided pictures, so that you can be certain, there are no unpleasant surprises.
Furthermore the quarter seemed to be safe, the apartmant/house has a doorman and it's close to the Botafogo beach (10 minutes walking).
Even though my stay was really short and I couldn't see so much of the neighborhood - I would recommend this accomodation (it's close to the beach, to the sugar loaf and also not so far away from the centro).
My final feedback: I would book it again. :)