Gulio is a great and helpful host, and apartment has everything it should have - comfortable bed, small kitchen and clean bathroom. Rooms are bit smaller that they seems to from pictures. Apartment has two floors - upper one with bedroom and balconi is bright and cozi - because is right bellow the roof its become a bit hot sometimes, but there is air condition. Lower floor with living room, kitchen and bathroom is unfortunaly a bit dark - there are only small windows with a look into building internal open space.
Whole apartment is on the fourth floor. There is an elevator, but stairs are also pretty comfortable and good for mourning cardio routine :-).
Apartment is located very close to train station. There is no problem to get to almost any touristic point on foot in few minutes. A lot of restaurants and caffeteries all around. But the street with the entrance to the building is a bit unpleasant - a bit dark and with lot of suspicious looking neibours.
Overal, it's good place to stay, and great "base" for trips around the Florence. I take away one stary because of nearest neighborhood, except of that everything is all right