I was with a group of 10 of my friends while we were on Semester at Sea (Spring 2013) and we stayed at Riad Dar Najat. Immediately I felt so comfortable with the staff, and Oliver is an absolute saint. Momo and Oliver planned everything for us, all we had to do was meet downstairs for our ride to come get us. We were only in Marrakech for 4 days, 3 nights and all of them were filled with great, fun things to do thanks to the staff at Dar Najat. The rooms are spectacular with full on air-conditioning, clean bathrooms, and comfortable beds. Everything about Riad Dar Najat was absolutely fabulous and I would highly recommend this Riad to anyone...especially SASers. If you're looking for a fun, safe, clean place to stay this is definitely the place.
ALSO...I recommend having at least one meal at the Riad. It was probably one of the best meals we had all trip.