Artan and Genta (his colleague) were very nice and enthusiastic. Artan picked us up from the train station for a nominal fee, and Genta showed us around the apartment and gave us suggestions on where to go in the neighborhood.

The apartment itself was spacious and well-decorated. It's also centrally located, so walking to most of the sights (Il Duomo, the Uffizi, etc.) takes less than 15 minutes. I would highly recommend staying here if you go to Florence.