zhaoylLV.8: https://travelpassionate.com/how-to-get-from-florence-to-siena-by-bus-and-by-train-italy-travel-tips/ Now if you are traveling to Siena with your luggage and you want to leave it at the bus station and then catch a later bus to another place like we did you can. To leave your luggage and buy tickets from the point the bus left you, you have to cross the street and take some stairs to a level below. The counter for the luggage is open until 6 p.m and the cost for a luggage is 7 euros. The bus terminal in Siena is 5 minutes away on foot from the historical centre.