Perhaps firstly and most importantly, definitely make sure you have an airport transfer arranged through them. The driver walked us straight up to the door which otherwise would have been difficult and intimidating to find at first, as the alleyways leading to it seem somewhat dark and confusing. I'd like to stress though that actually we ended up realising this was totally misleading, the area is actually surrounded by a school and rather nice families and little shops. It just looks very different from what we were used to but by the last night we felt perfectly safe and comfortable walking there even at night.
We also arranged to be served a meal in the Riad on arrival which turned out very nicely. The food was homely and traditional and very tasty, not a gastronomical explosion but that's not really the idea. It was also a pleasant surprise that there was actually a very good value drinks menu available with Morrocan wine and various spirits/mixers etc.
As for the place itself, I think we were both immediately impressed and very pleased by the look of the place, really does feel like a very comfortable haven in the middle of what is quite an intense city. The courtyard is lovely with a very nice (but too cold to be useable in March) plunge pool with seating around it and a few nooks and crannies with sofas and comfy chairs. Then the rooftop terrace is a marvelous spot and somewhere I don't think we will forget in a hurry. You can see the snow covered Atlas mountains in the distance, the beautiful Koutoubia mosque silhouetted in front of them. The weather was great while we were there and it made a great relaxing and private place to soak up the sun.
I feel a little harsh only marking the service as 'average' because on the whole it was very attentive and breakfast/drinks/meals etc were done just in the way we would have hoped. However on a couple of occasions we asked for help organising meals out in restaurants that we had specifically chosen and this wasn't as easy as it feels like it should have been. They didn't seem overly keen to even call in the first place and also seemed to want to persuade us to go elsewhere which made it a little awkward needing to be 'firm' and stick to our original plan as we knew exactly what we wanted to do.
Room was lovely, nice courtyard, nice staff, great terrace, nice location, all in all a great trip and will very happily recommend it.