Great location. We walked everywhere, as far as Piazzale Michelangelo, with our 9-year old. The place is exactly as described. Big kitchen is well-equipped. Washer and dryer are very useful for our week long trip. The apartment is steps away from a very busy street, but surprisingly quiet at night, ever during the weekend.
A few additional notes:
1. About a 10 min walk from the train station, through some narrow streets but completely manageable.
2. At night the staircase can be very dark, so have your cellphone ready as a flashlight.
3. The closest grocery store is a bit far away on the other side of Ponte Vecchio, about 6-8 min walk.
Overall a great place. Thanks Lapo!