This is a very good place to stay when you want to visit Florence. I stayed there for one week and was very happy with it.
The place was clean and equipped with all I needed (towels, toilet paper, shampoo, soap, hairdryers, kitchen equipment and more).
The bed is very comfortable. The room looks beatiful. It has mosaic floor and the furniture is with intarsia. There is actually a lot of furniture to store your clothes.
Matteo has put cake into the kitchen. It was very tasty and for free. There are some places to have a coffee, breakfast or a meal very close to the appartment. Matteo is also going to give you tips which restaurants to visit and for some important sights you shouldn't miss.
Except from yours there are (as far as I remember) three more bedroomes that can be occupied by other guests. But you stil have your own key to the place so you can come and go whenever you want. Actually I never had to wait to use the bathrooms, but I can imagine that it might happen sometimes.
You can get in contact with the other guests by meeting them in the kitchen but it is also easy to avoid to get in contact with them if you dont want to.
I reached everything by foot easily. An advantage is that the place is close to the trainstation and very close to Piazzale Montelungo, which is a bus stop for Flix bus. If your bus goes to Villa Costanza it is also perfect, because the tram takes you from Villa Costanza to Florenz and there is a tram station directly at the apartment. Matteo allowed me to store my luggage at the place before check in and after check out, so I never had to walk around with it.