From NYC (East):

Lincoln Tunnel (or New Jersey Turnpike): When exiting tunnel, follow signs to Route 3 West. Proceed past Giants Stadium to Rte. 17 N exit. Continue on Rte. 17 N to "Polifly Rd./Rte. 80 East" exit. At top of exit ramp is Hilton Hotel. Turn right at light into hotel driveway. Follow to rear of hotel and bear right to exit hotel parking lot. Turn left and then bear right FlagHouse Visitor Parking.

George Washington Bridge: I-95 South to I-80 West "Local Lanes" (Exit 68). Continue West on Rte. 80 to Exit 64B. At bottom of exit ramp turn left on Polifly Ave. Go under Rte. 80. Hilton Hotel is on left. At light, turn left into hotel driveway. Follow to rear of hotel and bear right to exit hotel parking lot. Turn left and then bear right to FlagHouse Visitor Parking.