I could not afford to stay in Venice so stayed in Mestre, which is nearer the airport. Hop on the train to Venice, takes ten minutes, cheap and often. Don't forget, in Venice itself, that you will be wheeling your luggage through streets and across bridges as there are no taxis (vehicles) in the main part of Venice. The vaporetti (water buses) do not always accommodate people with cases when they are busy. For food, head for a pizzeria for tasty and cheap pizzas. They are always better than those in restaurants or trattorias as pizzerias have proper ovens.