Pedro is a friendly and kind person, our communication went smooth. I've stayed in the room for two nights. One other room of the apartment was airbnb'ed as well, but the sharing of the bathroom still went well.
The best about the room and the apartment is that it's perfect central to a beautiful and nice neighbourhood and to a train station: from there you can go to the beach or take a ferry to the other riverside.
It would be a pleasure to come back one day.