Francescos apartment is really nice. It is very clean and you have everything you need. The apartment seems to be freshly renovated and has a very nice style (little Italian, little modern). The location is very good, you can reach all the important places by walking (between 5-15 min).
We only had a little parking problem, because the apartment lies in the ZTL zone. So if you travel through Italy by car or only want to visit Florence, you should inform yourself before to find a good parking solution, because our first parking spot wanted us to pay 60€ per night.