If you want to stay at a nice, clean and cozy place, out of Venezia's craziness, then Roberta's apt should be your first choice. it's literally 10-15 minutes from Venezia by bus and the apartment is big enough to host 4, maybe a family of 5.
Roberta is obviously a dedicated person that like to have everything set for you to have a great time at her place. She even left crackers, juice and lot of other goodies!