My wife and I stayed here and used this as a base for our time in Florence/Tuscany. We were able to get to Florence by bus easily, and drive to most towns in Tuscany that we were interested in. The airport is also a 20 minute drive away. There is a clothes washer, but no dryer so if you do laundry you have to hang it outside (works quite well). Walking distance to a pizza place which was pretty good (thankfully the waiter spoke English). The view is very nice, and it feels very private. No air conditioning, but there a several fans. Not a problem for late May, when we stayed.
One thing to note, is that google maps, or a GPS may not bring you the correct way by car. I would recommend going straight up via Santa Chiara (from Via Senese or Via Volterrana). I believe this used to be a one way street, but now it isn't. It's must easier than the way a GPS will take you.