We stayed in riad Misria for 3 nights this June. The riad was beautiful throughout and provided the perfect haven in the heart of marrakech - just as the souk was becoming overwhelming, we could escape back to the riad and recharge our batteries! Our room was lovely, the pool was great (and bigger than it looks in the pictures) and the food was delicious - the tagine that we had in the riad was the best meal that we had in Morocco (although the street food in the main square was a great experience and has to be tried), and the breakfasts were brilliant.
The staff in the riad were all incredibly friendly, and Omar in particular made our stay for us - helping to arrange taxis, excursions etc and giving us advice and directions to help us navigate the medina without which we would have struggled.
Overall we loved our time in Marrakech, largely as a result of staying in riad Misria.