We didn't meet Guido in person, but he was always available for contact by WhatsApp, and his neighbour and cleaning lady Rosaria made the check- invery easy. Guido was very helpful and friendly. The apartment was large enough for four persons. The location is very central, close to the Duomo. You just shouldn't have a problem with stairs, as the bedrooms are up small stairways, but that's already mentioned in the AirBnB description. Would definitely recommend this place!