I'm sure this has been asked before, but I cannot find it on a search--sorry if I am repeating. We will be in Siena in June and will need to get to Rome. Apparently we can take a regional train from Siena to Chiusi to Rome, or a bus directly to Rome. I cannot find any good information on the buses--how to buy tickets in advance, etc.
Anyone have knowledge in this area--I would appreciate advice!
Thanks,
Debbie