We had a nice time at Guiseppe's Airbnb. We booked this Airbnb, which was not available because of renovation, but Guiseppe offered us to stay in another airbnb of him. Everything was fine, Guiseppe was very welcoming and friendly - and the other airbnb was equally good. All rooms were super clean and had nice furniture.
Custonaci is not the most the touristic place - but there are supermarkets, a pharmacy and a few restaurants. We had a rental car anyway, so it was no problem to get to places like Erice, San Vito Lo Capo or Trapani.
We really recommend Giuseppe as a host :)