We've spent 3 nights at Jacopo's place in late June. The apartment is at the semi-basement of a building located about 10-15 min walk from Firenze Rifredi train station, not far away from no. 23 bus Terzolle stop (15 min to Central Train Station by bus) which means excellent connections to main sights. There is a small grocery shop right round the corner and a larger Lidl store about 10 min walk away. Layout of the apartment is a bit unusual: one room faces the street while the other one faces a small hallway in the back connecting the bathroom and patio. The shower space is about 2 meters away from the bathroom proper (WC+sink). Great, clean rooms, bathroom and kitchen. Another good thing is you probably won't need any air conditioning during summer (there isn't any anyway!). Although there were scorching 36 deg C outside it was a comfortable 20s inside. Also great host communication and checkout policy: you simply leave the keys in a basket when you leave. Main negative issue was the bad soundproofing as you could hear just about everything going on during the day on the upper level. Things calmed down during the night, but if you are a light sleeper enjoying late mornings you might want to look for something else.