Great place, in perfect location! Very close to main attractions (just 10-15 minute walk to Ponte Veccio), but still in a quite neighborhood with nice and not overpriced restaurants. Santo Spirito square is just 5 mins away with lots of options for cafe, dinner and a very laid back atmosphere.
The apartment has everything that a family could use and is children-friendly and safe. Already suggested it to my brother, but unfortunately it wasn't available during the time of his visit.
Marco, thank you very much for your hospitality and giving us all the tips for restaurants etc!