Venice is a dream city, a carnival city … A dying city, a tourist feast during the plague … Venice is beautiful and unusual, but it is so difficult to see it for real if you have only a few hours of time.
Therefore, my advice is – be sure to come for a full day, better with an overnight stay and better without the burden in the form of small children, suitcases, group.
Ideally alone, this is a city of loneliness among the crowd.