In June - July 2014 we were vacationing at villa "Valery" with our two little kids. Evrything was good enough. The villa is exatly as in the pictures, the discription is also correct and full.
The owner - Mr. Bono - attentive and caring person, whose English is perfect! We have spent 5 weeks in this villa, and Mr. Bono was always ready for any support we requested. He helped us to arrange transfers from and to Palermo airport, to rent a car in the town near the villa - Campobello di Mazara, showed us places where we can buy local food and wine, etc.
The place is excellent for families with kids. It is very quiet (except Saturdays and Sundays, when you can hear music from aquapark near by). The territory of the villa is fenced, so our kids explored it all. There is no vehicular traffic near the villa, so no danger for kids. Mainly, during the period of our stay, the temerature was comfortable both day and night, so we swiched on air conditioning only several times at the daytime. The beach is really 80 meters from the villa. There is shallow entry into the water, need to go 20-30 meters that water reaches the mid-thigh. The wave usually is not high. So it is very comfortable for little kids, they will not affraid of water. The only problem we encountered, is huge amounts of garbage on the beach. Visitors of the beach do not warry about that trash they leave. Despite all the efforts of those who live near (including Mr. Bono), kids are to be watched, or they have fun playig with plastic bottles, cans, cigarette butts, and even with glass shards.
Tre Fontane is a small town, francly speaking, - a village. There are some shops, bars, farmacy. Big supermarkets, such as Lidl and Eurspin, can be found in the suburb of another town - Campobello di Mazara. It is only 6-7 kilometers from the villa, but the only way to reach it is by the car. From my point of view, rental car is definitely needed to feel free to move around. We visited several places of interest, and old small towns located in the area of 100 km from the villa. It was very interesting.