Sorry for late comment. We are actually really pleased with the stay in Venice largely due to this Airbnb experience. Genovina is a very helpful lady and was easy to get in touch.
The place is very close to the dock and half-minute's walk to reach to the water service. However, it is a little far away from the plaza because of Venice's intricate paths and complicated routes as well as bridges for new comers, but things have become much easier due to Genovina's help. She provided the map to us and explained in detail.
We quite enjoyed the morning time because of her delicious breakfast and the splendid roof-view on her terrace.
The owner of the house, the cat with many names, also has added to colour of our stay. I have to say I am allergic to cat fur according to hospital's report but I still can't help to touch him, so adorable. Thus, I got a running nose during the 3-day stay in Venice and I don't even care. (^_^*)
The house is beautiful and the stay is memorable, hope to meet Genovina again in the future.