We had a brief overnight stay here and enjoyed our time. The location was perfect, the price was reasonable, and the Italian family who owns it is so pleasant and charming. My mom happened to be sick at the time and they brought us a hot water bottle for her. I also had a work emergency and needed to print something and they let me print in their office, which was beyond my expectations. Our apartment/room was quaint, though our bathroom and hallway had motion-sensing lights that were terrible and did not function well. We were also under the impression that the place had wi-fi, but the wi-fi access was actually only in the office, which was in the building adjacent to our room and not convenient. The fact that they offer breakfast is really nice, though it was nothing special (yogurt, packaged croissants, coffee). However, the place is perfectly located for all the major sights in Siena and the charm of the family (who have apparently been running this business for over 60 years) made it worth it.
Pros: The family the runs the place was so welcoming and helpful
Cons: Add wi-fi access in the room, remove the motion-sensing lights that turn off when you stand still for 10 seconds in the bathroom or hallway
Location: The major sights are nearby, such as the Duomo and the Piazza del Campo. There is also shopping and many restaurants. Right where you want to be.