This is by far the best place we stayed through airbnb. Room and bathroom were very clean, Alessandra was very charming and helpful. She greeted us every morning with a nice breakfast. If you need advice about venice Alessandra is very knowledgeable and can direct you to the nice spots, including a good and cheap restaurant that is not a tourist trap. Access to Venice is really easy, take a bus in front of Alessandra's apartment and you'll be there in 10 minutes.
I hope Alessandra manages to raise her own B&B in Venice, she certainly deserves it.