The flat has been from far the best flat I've ever booked on Airbnb.
It was cozy, greatly decorated, clean, comfortable, calm and very well located (20min by foot from Duomo, 10 min by foot from the metro, 4 min by foot from the flat).
Navigli is a great neighbourhood with nice nightlife (bars, aperitivos, restaurant) but also very close to nice shopping streets.
Finally, Elisa has been really reactive and helpful.
Highly recommended!