I went with a friend to Marrakesh for a few days and we stayed in Riad Ghenza. It was a great experience! We felt really comfortable in our rooms, that were beautiful and extremely clean, a mix of Moroccan and modern style. Also have to say that the Riad is special because of Laurence and Fabien that were always extremely friendly, honest, helpful, and nice. Really cosy atmosphere. Miss the Mint tea in the breakfeast and the chats with Lawrence after visiting the Medina!
By the way, great location, really close to the best restaurant in Marrakesh, Le Fondounk and you can do everything walking!