Eat everything. From pizza to pasta carbonara to lasagna, there is no bad food in Venice. Go outside your comfort zone and try rice with squid ink or maybe the catch of the day, which is served whole (eyes and all). Trattorias are around every corner, but be sure to try Trattoria Sempione, which is perfectly situated on a wonderful canal in Venice on Ponte Dei Bareteri (you can also take the perfect gondola ride from outside this restaurant's front door). Just beware of cover charges and not-so-free bread.