We stayed in this apartment in June 2018. Claudia was quick at replying and helpful throughout the process, being very flexible with allowing us to check in late in the evening when we landed, and check out a little later for travelling reasons.
The apartment itself is lovely, on the third floor of a classic block with a stylish but comfortable interior. The best thing about the apartment is the brilliant location- it is only about 7 minutes walk to the duomo, and all of the attractions of Florence were within 30 minutes walk. The street it is on is really fun, with lots happening late into the evening. There are dozens of fantastic restaurants and bars very close by, as well as an amazing gelateria right by the house, and a really nice supermarket just down the road.
We had a brilliant time and could not recommend it highly enough.