Great location! Train station was across the street (not much train noise though!), and almost all of the popular places in Firenze could be walked to in 10-20 min. There is even a grocery very close (on the south end of the block).
The flat was as described, clean and no surprises. In the heat of summer, AC worked really well in the master bedroom and living area. Other parts were a little warm but not uncomfortable. Wifi worked well. Andrea met us downstairs and gave us a detailed tour, and made sure we could reach him if we needed anything. We successfully used the washing machine (it's a typical european all-in-one type that doesn't dry well - so be prepared to use the drying rack on the back patio). Overall a good experience and exactly what we expected. Thanks Andrea!