It would be difficult to find accomodation that is more centrally located than this - right in front of the Medici Chapels, 5 min walk to the duomo, and right around the corner from the market district. There were also several small convenience shops nearby. And yet the room we got was very quiet and comfortable, enabling us a good night's rest every night.
We got to use a very fast wifi, a washing machine and dryer, and had the use of the kitchen and fridge. It was really all we required from an accomodation!
The house itself has 3 rooms for guests, and at least 1 other room was occupied every night we were there. This made assessing the toilet/bathroom during "peak hours" a little challenging sometimes. But it was nothing a little planning on our part couldn't solve. The house was on the first floor, and so the lack of a lift did not pose much problems for us. And Federico very kindly helped us with the luggage when we arrived.
Overall, it was an excellent stay. I would not hesistate to recommend it to anyone visiting Florence.