Three of us stayed in this apartment for 3 nights, and we really enjoyed our stay. The apartment was spacious, and had a well stocked kitchen that allowed us to cook a few meals. The space on the bottom floor of the apartment was quite nice, as it gave the three of us a space to hang out in before hitting the bed. The beds were comfy, but the pillows were strange (they had springs in them). Otherwise, the place was clean, suited our needs, and was a reasonable price.
Upon check in, Francesca's son, Michelangelo, showed us around the apartment and showed us a booklet filled with business cards, advising us on the best places to eat. There was also a guest book with info filled in from lots of prior guests. Apart from being a nice touch, it was interesting to read about the experiences and recommendations of other travellers.
A few things to watch out for. We had some trouble finding the apartment. Florence has 2 different sets of street numbers: one for business (red) and one for residence (blue). These numbers are not sequential, so to find #70, simply follow the blue numbers and ignore the red. Secondly, be careful of the switch for the water heater in the bathroom. It is on a switch directly beside the lights and fan for the bathroom, so it was accidentally switched off at some point, leaving us with no hot water for a short while. Other than these 2 things, we thoroughly enjoyed our stay here, and would return in the future if we were to visit again.
P.S. The best gelato we had in all of Italy is just around the corner and down the street, at a place called Carabé.