I can totally recommend this place. It is situated 7 min. from the train station which makes it very easy to do daytrips e.g. San Gimignano. However it is located directly in the center of Firenze in a little street with barely any traffic. So it is just a few minutes to the major city attractions.
Apart from that, the apartment is huge and beautiful. It has wonderful old furniture, an incredible bedroom and stone made floor.
My girlfriend and I stayed at Ales place for a couple days and felt very comfortable. He didn't disturb us at all but gave a few tips for restaurants and so on at the checkin.