Gaia was there to welcome us and had bought us everything for breakfast the following day, thanks so much. The appartment is really nice, very close to the train station (handy if you plan to use Florence as a base to do day long visits to Siena and Pisa as we did), and walking distance to both the town center and the lively Oltrarno neighbourhood at the other side of the river.
The appartment is as shown in the photos, nicely decorated and functional. Views to the Piazza are awesome.
A few caveats though: 1. As stated on the site, it is a 4th floor without an elevator, doable with suitcases, but you don't look forward to going up and down several times a day. 2. There is no washing machine. 3. We found the place to be a bit noisy: late at night music and shouts in the piazza, cleaning and works early in the morning.