My wife and I are headed on a 7 day cruise departing Venice, and we have one full day before the cruise and 2 days after to explore. We were thinking that we could see Venice in one day and head out of the city when we return from the cruise. We've been tossing around ideas such as Verona or Padua. Looking for some advice as to whether this is a good idea. Would we be doing Venice justice by spending just one day/night ? Are there any other towns within a couple hours train/car ride that are worth a visit?