To truly "walk around" and experience Venice without feeling rushed, you need at least three full days. While the historic center is geographically small—you can walk from the Santa Lucia train station to St. Mark's Square in about 30 to 40 minutes—Venice is a labyrinth designed for getting lost. One day is enough only for a "greatest hits" tour of the Rialto Bridge and San Marco. Two days allow you to explore the quieter districts like Cannaregio or Dorsoduro. However, the three-day mark is the "sweet spot" in 2026 because it gives you time to navigate the narrow "calli" at a leisurely pace, take a Vaporetto (water bus) to the islands of Murano or Burano, and enjoy the city's unique atmosphere early in the morning or late at night after the day-trippers depart. By 2026, Venice has implemented an entry fee system for peak days, so having a multi-day hotel booking is the best way to avoid daily fees and truly immerse yourself in the city's pedestrian-only culture.