We stayed at the Riad for a week having done lots of research into where to stay while in Marrakech. The positive reviews of this place are bang on the money and if I were to ever go back to Marrakech, I wouldn't hesitate to stay here again.
The Riad is in the north west of the Medina, and maybe a 15 minute walk from the main square. It's worth noting though, that we barely spent any time in the main square, as there are so many other things to do in the Medina, and once you get your bearings (which didn't take us long) its an easy walk (minding the scooters!). It is also easy to get the Majorelle Gardens and the new town from the Riad.
Nicolas was incredibly helpful, describing the routes and what to look out for to help navigate. He also made reservations for us when we asked him to, and made recommendations of places to eat.
We stayed in Blanche room- I'd recommend this on the basis that it is maybe quieter than some of the other rooms. The nature of a riad means it is arranged around a central courtyard, and so noise travels. So if you are a light sleeper- pack ear plugs. We were disturbed on our last night by some inconsiderate guests being noisy, which was a shame.
I also had a very painful facial in the spa- maybe that is the way they are done in Morocco, but I wouldn't go back for one in a hurry! I didn't have any other treatments though, so maybe they would be more relaxing!!
The food is simple but tasty.
Overall, this was one of the best hotel experiences I've ever had- the staff, the location, the design, the food... all of it made for a really enjoyable trip to Marrakech.