We had a great overall experience. The apartment is exactly as described and pictured - great also for 6 people due to the 3 bathrooms and the comfortable living room and kitchen with big table.
Stefano was easy to reach, always in contact until we got there, also with information not directly concerning the apartment (strike of public transportation, so we could arrange for private taxi boat) and on time to pick us up at the boat and introduce us to the apartment.
The place is a a central location with also a supermarket around the corner for your water and cookie supplies. We can fully recomment Stefano and his place, next time we stay in Venice for the bienale, we will try his other place near the arsenal.
Thank you.