We stayed for 6days in Erice, with our two children aged 2years, and 3 months. The house was nice with a lovely enclosed courtyard area, and the climate in Erice was a welcome break in July, cooler and breezier than Trapani, and with no mosquitos. It is a 15minute drive up the mountain road, and the cablecar is a good alternative if you get a taxi at the other end into Trapani. Erice itself was very tourist and daytripper focussed, with limited groceries (there is a supermarket at the bottom of the mountain), though lots of visitors stay until late in the evening so it is still pleasantly lively for dinner in the evenings. Gli Archi de San Carlo was our favourite restaurant.