The apartment was very comfortable and clean, and the view is really wonderful, right at the Duomo. It is located right at the edge of the old town, less than 10 minutes walk to the central railway station and 20 minutes walk to the most of sights.
Saveria was an excellent host, most helpful and made us feel really welcome. She knows a lot about Florence, its history and arts, and would be happy to give you tip you'll probably won't find in your travel guide.