Cool building, great location. Sergio is a communicative and thoughtful host.
Two things to be aware of:
The steps between the 2nd and 3rd floors, to get up to the two beds on the 3rd floor, are unusually steep and narrow. They would be challenging for someone with mobility issues (or who is heavily intoxicated). For able-bodied adults they are interesting and fun.
The property's rules about guests are more restrictive than is typical in my experience. That's the host's prerogative, of course, but if you plan to have anyone over to visit, like a friend and his wife for supper or to visit before going out, you will need to register them as guests (which also increases the cost a bit).
Overall we enjoyed our stay and would stay again.