When you live in New York City, you come to expect the unexpected. While resources like GoHomeNY.com can help you get the hang of city living, nothing—and I mean nothing—could have prepared me for the day I came home to a literal flood in my Rose Hill apartment on East 26th Street. I can’t fault my upstairs neighbor for drawing a bath. But I can fault her for turning on the water and leaving to walk her dog, letting it…