I have just finished my journey from Roma, Florence, Venice and Paris, all the way I arranged my accommodation via airbnb. Here Sara's House is the most most recommended one.

First, it is located near the station mestre, which one station apart from Venice the historical centre. I highly recommended you stay in this neighbourhood. The nearby is safe and secured, prices are relatively lower. It takes within 15mins bus to get to historical centre.

Second, Sara is the best housekeeper I ever met, she arranged the house pretty well, very clean and every appliance working well. She prepared a detailed introduction about everything about venice, which makes my journey very clear.

All in, this is the nicest accomodation experience during my trip.
Thanks a lot