Me and my girlfriend stayed 2 nights at this property and we can say it is as good as it gets.
The host is excelent. Allowed us to drop our luggage before check-in, was extremely nice and gave us a quick brief of what we could find around the place (we followed couple of tips and we were very pleased)!
Excellent location, 5min from Pitti palace and Boboli gardens and 15 min of a pleasant walk to the Piazza del Duomo.
The property is in excellent conditions and was very tidy and cosy.
Please give this property a good look when trying to find a place to stay in Florence as it is worth it!