We arrived at the Milan train station at 7am and arrived in Venice just before 10. I couldn’t wait to lead my family out of the train station and toward the Grand Canal where we could stand and look across the water at the most beautiful city I’ve ever visited. “Wow!” the children exclaimed, almost in unison. I was back in Venice, 19 years after I’d come during summer term in law school. We checked into our AirBnB, a 2-story townhouse of sorts featuring a rooftop deck overlooking…