Marlborough's High Street is on the A4 and is the town's main and busiest thoroughfare. Godot's is on Kingsbury Street (No. 7) and opposite Siverless Street. Parking is available a minute or two away on the High Street and in car parks off the High Street. (You may need to enlarge the map to see the town's parking locations.)
It is possible to drop people — and luggage! — off right outside the door, but it's advisable not to stay there for longer than you really need to!