I stayed a second time in Marcos place. This time for two nights. What I had not realized in the first night, was that something in the room repeatedly bit me. I assume it was bed bugs (for the shape of the bites), but it could as well be mosquitos since I slept with an open window. Which is a necessity during warm summer nights in this room, since there is neither A/C nor a fan. Also, the door does not close completely, which is why I had to put a chair in front of the door.

Mario tried everything to make my stay comfortable, e.g. offered me mosquito spray, joined me on a day trip to Syracuse, explained me the buses, picked me up and brought me to the airport etc.
On the other hand, he did not respect my personal boundaries and tried to invade my personal space; despite me expressing clearly and directly several times that I would not be interested.

I am not sure in how far the first point balances out the latter.