Great location in Oltrarno, just a few minutes walk from everything in Florence but way more tranquil than other areas. Still plenty of people about, but you can be at Giardino Boboli within a minute, at a cute piazza with good coffee and cornetti within seconds, and at the river within a couple of minutes. Some street noise goes late, just use a white noise app on your phone. One downside to the apartment (only reason for 4*): if you want to lounge around with your group, there isn't any place to do that- there's a nice big kitchen table but after a day of walking around, you might want somewhere more comfortable to hang. Other than that, great place and very clean.