Andrea's apartment is superbly located just south of the Arno river and within easy walking distance to both the train station and the city centre.
If you're looking for a clean and simple base from which to explore the beautiful city of Florence, I'd highly recommend Andrea's apartment.
Moreover, as a host, Andrea was incredibly helpful. For instance, Andrea took time to meet us at the train station upon our arrival, and back at the apartment, he presented us with a map and guided us through the main attractions, as well as a few local secrets, that we may have liked to visit during our stay.