Francesco's room is amazing! I am originally from a town in the Florence province, so I know the city pretty well and I can say this is a perfect location: the address is very central (5 min walk from the Duomo and 10 min walk from the central station) but at the same time our room was very quiet, as it was located in the back side of the building. The apartment is completely renovated in a very simple and tasteful modern style and is spotless clean. The bed is very comfortable, the bathroom is huge with a great shower and the kitchen (which is shared with a second room) is modern and fully equipped. Francesco was very nice, giving us all the information we needed upon arrival and keeping excellent and communication before and during our stay (I didn't need info on sighteeing and places to eat/drink but I'm sure that if you ask he'll be eager to shar his favourites with you!).
Overall I really recommend Francesco's room for your stay in Florence, a much better value than most hotels in the city.
I hope I will be able to stay here again next time I visit my family in Tuscany.
Grazie Francesco!