I stayed here on my own, for a wedding down the road. The flat is one side street off the main town square, so very easy to get to the duomo, cafes and restaurants. There is A/C in the main bedroom, which I was very grateful for!
Calatabiano itself is mostly untouched by tourists - I didn't encounter anyone with any English, but they were very friendly and helpful (from what I could understand!)
Salvatore had his father on lookout duty to give me the keys, and some water and homemade marmalade!
The flat is quite well equipped, and even had an iron I could use. Some of the decoration/furniture is on the traditional side, but it doesn't detract from this beautiful place to stay.