I travelled to Luca's house with my husband and three young children. We had a lovely stay. The house has been carefully restored by Luca and his family, and is very atmospheric - you get a sense of classic Sicily while staying there. The house is also well located; Balestrate is a great jumping off point for the sights of Western Sicily, and the town itself is very convenient for shopping (green grocer, bakery, specialty stores) and restaurants.
Luca was also a very responsive host. He picked us up and drove us to the house when we got in late, and he was quick to fix a small problem with the water pump on the day we arrived.
The only small fly in the ointment, which others such be aware of, is that the house is very cold. We were the first guests of the season (mid-April), and the temperatures were quite cool at night. The bedrooms only have screens with shutters - no glass on the windows - and the house is not heated. This is probably not a problem in the dry, hot months, but during the chilly, wet spring, we suffered a bit.