The Marriott Perimeter Center at 246 Perimeter Center Parkway NE is a short walk from the Dunwoody MARTA station on the red line. There’s a Hertz rental car office inside the hotel if you are in the area or staying at the hotel and need a car.
From the airport, board a train labeled North Springs. After 8:30 p.m., board the first departing train, travel to the Lindbergh Center station and wait for a North Springs train there.
Once at the Dunwoody station, exit the fare gate and walk straight ahead to the stairwell/elevator next to the parking garage. Go all the way down to the ground level and follow the sidewalk out to the street (Hammond Drive). Turn right on Hammond Drive then left at the first light on Perimeter Center Parkway and walk about a block (see walking map).