This valley south of Marrakech is the best option you have if you want to rent a car and have a quick tour around ... I rented a car and went to Zagora and Merzouga, But instead of going from Marrakech to Ouarzazate I went down the Valley of Ourika. A lovely valley with gorges, waterfalls, valleys, mountains ... Etc. In the valley you can visit the town of Moulay Brahim which is displayed on the map. Y can stop for a drink and visit its souks. If you follow the road you can reach Setti Fatma where you find pretty waterfalls. The climb to the falls is a little crooked so go with comfortable shoes because you have to go up a half cliff.