In April, we (two of us) will be spending one week based in Siena then two days in Florence. Flying in and out of Florence. We've read all the forum posts that we could find related to transport Florence Airport to Siena, and Siena to Florence city, but still not sure of best methods. We are not sure if we are going to rent car, but if we do, probably for only a few days while in Siena. We're wondering if taking the bus to Siena after overnight flight from US will be too much of a hassle with all our luggage, etc. since we'd have to get from Airport to bus station. We've read that taxi or car hire to Siena is an option if you are willing to pay (which we might be) and that sounds like it could really be nice, but it's not clear what it would cost or how to arrange. Advice?