As many other have said before, Massimo was a great and kind host. He contacted me a few days before explaining how to get to the apartment with a clear map.
His apartment is great. Is spotless clean and exactly as the photos. Very cozy and with absolutely everything one may need. The neighbourhood is great, it feels local, far away from the really touristic area and is very close to the status of Fte Nove, which allows you to go anywhere by boat (airport, train station and anywhere in Venice). It was my parents' first experience with Airbnb and they were impressed. Unfortunately not all the experiences with Airbnb are gonna be this good. Thanks Massimo!