Despite its enviable position just north of Tribeca, SoHo’s far west side has always felt like a bit of an afterthought. Gritty and industrial—a warren of warehouses and manufacturing facilities—the area now known as Hudson Square has little of the heavy foot traffic or fancy retail crowding of other nearby areas. But for Cassie Arison, the Miami-born, Tel Aviv–raised, creatively-inclined publisher and philanthropist, Hudson Square’s sheer authenticity has always held personal appeal. “I lived in a loft on far west Broome Street when I first moved to New York a decade ago,” Arison says. His grandfather, Ted Arison, established Carnival Cruise Line in 1972. “I loved being able to sit…