Our driver was very friendly and helpful, picking us up directly from our riad. He spoke excellent English (also French, Spanish and numerous others too!). The drive took about two hours and our driver talked us through all the local history on the way and was happy to answer any of our questions. There were some fantastic photo opportunities in the beautiful mountain foothills. The short trek up to the small waterfall was suitable for all abilities - you'll also find that it's quite a lot more touristy than you'd expect. The route up passes through a lot of market stalls! If you are out in Marrakech then it would be a shame not to take one of these excursions and experience some of the natural Moroccan beauty.