This apartment is awesome! it is very silent at night even though it is located right on Piazza de la Signoria. Location is unbeatable. Stefano is a great host, helped us check in, gave us a tour and was always very responsive before and during our trip. Beds were very comfortable and we even did our laundry once without any problems, just figured out the washer which is also a spin dryer and finished the drying on the available tenders.
The apartment itself merits attention, there are a LOT of art, posters, books, magazines and props related to 60/70s Florentine Fashion scene, it's unbelievable.
Walking distance to everything you can't go wrong staying here.