We had a great stay. Domenico was a kind and respectful host, and we appreciated the nice basket of clean towels, soap and shampoo, and candies in our room. The room is very spacious and the bed very comfortable; we slept so well every night and woke up to beautiful sunshine and birds each morning.
Be aware that there is no A/C, we came during a heat wave and the apartment was very hot, but there is a ceiling fan in the room. We left the windows open as a result at night, and I was bitten by mosquitoes pretty badly- I would recommend bringing bug spray or lotion for bites if you come when it's hot.
The location is really excellent. Ten to fifteen minute walk to the train station, five to ten from the Duomo and all the main sights. We never had to take a taxi. There are two flights of stairs to the apartment but even with heavy backpacks we didn't have any issues. Florence was easy to walk around, enjoy the architecture and restaurants, and then come back to the apartment at night.
We would recommend this place if you plan to spend lots of time touring the historic center! Excellent value for a clean and spacious room with a very gracious host, right in the city center.