I stayed with my 10 year old son for 10 days at the Fattoria just this past July. What a fabulous experience in Western Tuscany. The hotel is lovely, the breakfast delicious but most of all the care that Maria, the manager, gave us was exceptional. She happily made reservations, gave directions and helped with any problem that we needed solving. Her mastery of the Italian language helped me when I ran into a bank issues. She took care of the largest and smallest of problems and never a moan. The hotel at the time was completely full but not once did you feel any request was too much.
The nearby restaurant was exceptional. I go to Italy almost every Summer and this was simply one of the best places I've ever eaten in. Also, right below the hill the restaurant sits on is a small soccer field where the kids would play a bit as the grownups had starters.
For families, this town is particularily good in that it is 30 minutes from the sea, 15 minutes from a beautiful volcanic lake and has a small playground next to the hotel as well as the small soccer field. For families who want more fun, there are two water parks within close range. The nearer one in Follonica (which just opened just this year) was better and closer than the other in Cecina.(though the Cecina one had many more slides)
Another great thing about this location is that it is 50 minutes from Siena. Siena is a gorgeous tuscan town and quite manageable on foot. Even though it is technically a big city..it feels small
My friends and I had a wonderful time in Tatti and this really all came down to Maria, the restaurant and the comfortable room that we had. THANK YOU FOR A GREAT TRIP!