If I could give six stars, I would. This is a lovely flat that is centrally located yet feels very secluded (remember that St. Marks and the hordes are all in the southern edge).
The host made my whole family feel like long lost friends and she was a great help in suggesting a nearby restaurant for our first evening.
Even though it is an easy 15 minute walk from the station, splurge for a water taxi when you arrive and enjoy the ride. Often bypassed because of the crowds, this apartment helped make Venice an extraordinary family adventure.
I would definitely recommend this place to family and friends - we have stayed at many AirBNBs and this is at the top of our list.