George Washington Bridge. Take to Harlem River Drive, exit at Triboro Bridge to Grand Central Parkway, Exit 6 at 94th Street. Exit ramp leads onto Ditmars Boulevard and to the LaGuardia Plaza Hotel. Manhattan. Midtown Tunnel to L.I. Expressway 495 to Brooklyn - Queens Expressway North to Grand Central Parkway East to Exit 6 at 94th Street. Exit ramp leads onto Ditmars Boulevard and to the LaGuardia Plaza Hotel. Long Island. Take the L.I. Expressway 495 to Grand Central Parkway to Exit 7 at 94th Street. Make left at 2nd light, follow to Ditmars Boulevard and to the LaGuardia Plaza Hotel.