I stayed here with my girlfriend for a couple weeks and we loved it! Best price for the flat and location. The location is, in my opinion, the best in Florence. Walking distance to everything, not too touristic, and in the area with the best nightlife (it's central to a lot of beautiful cafe's, restaurants, and bars).
Walter, the owner, was very helpful and a great host. Easy check-in/check out and available when we reached out to him.
The flat has a cool feel to it, like you are staying in a proper Italian home, which is what we were looking for (extra points for the David Bowie memorabilia). Nice hot shower, good kitchen appliances and utensils, had a good night's rest each night, wifi was great. Would stay here again and recommend it to others.