We had a pleasant stay at Carolina's villa and I can echo what has already been written by other guests. Villa is spacious, clean, comfortable, plenty of parking space in the street. The rocky beach was less than 5mins away and we enjoyed it much more than sandy overcrowded Mondello beach.
Just a couple of things to keep in mind: the wifi is quite slow and coverage is spotty at best. Enough to check your email, social networks or upload an occasional photo but not much more. Two-storey bed is not really suitable for adults (kinda obvious now looking at the photos, but keep that in mind). There's no washing machine in the apartment, so you must plan in advance and ask the host to wash your clothes for you downstairs.
Upon our arrival we were met with local snacks, treats and wine, which is a very nice way to start a vacation. We mostly communicated with Carolina's mother Anna; she was very accomodating and responsive.