Enter this location on West Century Boulevard. Enter this location at 6033 Avion Dr. This is the entrance address for the Sheraton Gateway Hotel Valet Lot, operated by AAA Parking. It is located on the west side of Avion St. between W 98th St. and W Century Blvd. The entrance is marked by a blue 'valet' sign with white lettering, and is located near the lobby of the hotel.