The route
Drive towards Tetouan (motorway then national road), then the N2 to Chefchaouen. The last part crosses the mountains with bends: drive carefully, especially at night.
Parking in Chefchaouen
The medina is visited on foot. Park in a guarded car park at the edge of the old town.
Starting from Tetouan or Martil
If you stay in Tetouan or Martil, the car can be handed over there on request: you save about an hour of driving.