Three days are enough to cross southern Morocco from the Atlantic to the Sahara. The route leaves the Agadir coast, climbs into the Anti-Atlas, follows the oasis valleys east to the great dunes of Erg Chebbi, then recrosses the High Atlas towards Marrakech.
Because the vehicle and driver are reserved for your group alone, the pace is yours: stop to photograph the Valley of Roses, linger at a kasbah, or press on to reach the dunes before sunset. Two contrasting nights punctuate the road — a hotel beneath the Dadès cliffs, then a camp on the sand.
Worth knowing: this is a one-way crossing. You are collected in Agadir and dropped in Marrakech, which makes it a practical way to link two stays rather than driving the same road back.