There are many reasons why it is better to stay in a Mestre apartment on the mainland when visiting Venice. It's at least 20% cheaper, you'll be in a modern, clean high rise apartment with underground secure parking garage, and it is far easier to get to your unit.
My American travelling companions had a knee jerk reaction of unhappiness to photos of typical rental Venetian apartments (old when Columbus set sail for America, musty, cramped, last remodelled during Protestant Reformation). Therefore we chose a unit in Mestre on the mainland 3.5 miles away and were very pleased.
The high speed electric trolley (ACTV) into Venice costs 1.50 Euro and stops right at the corner (Volturno). You need to buy a trolley ticket at the tobacco store directly across the street from apartment (look for sign with big "T") before boarding trolley.
There is a Cadoro supermarket directly behind the apartment complex which simplifies shopping for evening meals. Even the most basic...