We spent 3-week family vacations in this house. Overall, we had a great stay. The apartment is spacious, with 2 separate bedrooms, big kitchen and a very nice terrace. It has a particular 70-s look but clean and well maintained. It is air-conditioned in every room, which was crucial given very high temperature in June in Sicily. But you need to limit the use of electrical devices to avoid a power failure (not more than 2 air-conditioners in the same time).
Our biggest disappointment was the area and the beach itself. If you expect crystal clean water and the beach - it is not in Mondello. This was surprising given tens of excellent reviews we've read before choosing this place. Too many people and too dirty. It is especially terrible on weekends when we had an impression that all Palermo is coming to Mondello beach. Even the private sectors on the beach were sold out. We had to rent a car and go outside - to Terrasini and San Vito Le Capo. I do not recommend it to couples with small children because of hygiene issues but it can be good for those travelling with teens as this beach is largely populated by this age group.