Subject: Italian rentals - car necessary?
I'm sorry to say public transport is not a real option in Tuscany countryside. Of course many people travel there without a car, but it involves spending a lot of time waiting for local buses which are often the only way to get to smaller places. If you stay in a mid-sized town and you want to go to Florence or Siena you can take the train, but that's almost all. Further, the farmlike lodgings are often in the middle of nothing in the countryside, at the dead end of am unpaved street... If you need more info please write again.

Ciao Paolo