I have stayed in the flat 13.03.19 - 17.03.19 with my family (my wife, our small son and my mom).
The flat is located in the nice area, 10 minutes walk to the train station, 15 minutes walk to the main sightseeing locations in Florence. A number of restaurants around, 3 minutes walk to the Mercato di San Lorenzo, where a lot of Trattorias and Pizzerias can be found.
The flat is not very big, but very cosy, clean and tidy. All furniture, kitchen, bathroom are very tidy and nice-looking. A lot of towels in the bathroom. Kitchen is well-equipped (kettle, microwave, stove, fridge). The inner garden is wonderful, you can relax in the cortyard with a glass of wine. The flat is ideal for a traveling pair or a small family up to 4 people. The place is very quiet.
The hosts, Sergio and his mother-in-law, Marcella, were very helpful, flexible and welcoming. The communication before the stay was very clear and transparent, Sergio had kindly answered all our multiple questions. We were travelling with adventures - our flight to Florence was cancelled, and we had to take the plane to Pisa, and then take a bus to Florence. Therefore, we arrived around 23.00 instead of 17.00, as we have previously planned. At the same time, my mother was flying from the other location and was in Florence on time. So Sergio had to come twice, firstly to let my mom in, and then once again at around 23.00 to show the flat to us once again, as my mother did not speak english. As we were departing, Sergio has allowed us to leave our bags in the flat until the evening (as we had a late evening flight) without extra charge. We are very thankfull to him for this favour.
Due to the excellent location, hospitality of the host and the flat itself I would definitely recommend this place if you are planning to visit Florence.