Amazing hospitality and great apartment. It is huge and very well equipped with everything you will need. It is a perfect choice if you are traveling by car, there will always be a spot for you car. My one and only suggestion for improvement is an air conditioner in the room, it would be more pleasant for the crazy summer in Italy.
I highly recommend staying in Francesca and Massimiliano's apartment, they gave very nice tips, were always available for helping us and Florence is a beautiful city!