If the sweeping New York City views from nearly every room don’t make your jaw drop when you walk into this Weehawken townhome, the sheer size of the place will. It has four bedrooms, four full- and one half-bathroom, spans two floors and is 4,000-square-feet in size. “It’s the largest condo on the Weehawken waterfront,” said Nicole Exposito, the listing agent with Nest Seekers Hoboken. “The only kind of square footage around here like that is in a brownstone, which is vertical living. This is two floors rather than four or five floors. So it’s a lot of useable square footage not hallways and …