This link takes you to a site that will give you directions to the Key Bridge Marriott from any location you enter . The Key Bridge Marriott is located less than 4 miles from the Mount Vernon College campus. From the main exit, take Rt. 1 North to Rt. Road becomes Wilson Blvd.
Hotel is four blocks on right.
The Hyatt Arlington is adjacent to the Rosslyn Metro Station. Fort Myer Drive is the closest exit to the Hyatt Arlington, and the hotel is across the street at 1325 Wilson Boulevard. The Marriott is on the orange or blue line of the Metro, and Rosslyn is the closest stop. The Marriott Hotel also runs a shuttle service between the Rosslyn Metro and their hotel, which is located at 1401 Lee Highway. It doesn't run at all on Sunday.