Very nice! You have your own apartment with a huge bed, an equipped kitchen, a bathroom, and a balcony/sunroom, and only share the entrance with another separate Air BnB apartment. The building isn't located in the nicest neighborhood (right next to the harbor) but it's clean and renovated on the inside. Luciano was a great host! He was very flexible for the check-in and check-out, responded quickly, and gave us a lot of information and tips (about Palermo, airport connections, restaurants,...).
You should be able to walk longer distances though because the busses never come, so walking to the downtown area is usually faster than waiting for a bus. However, the train system is very good, a day trip to Cefalù is recommended.