We stayed here for several nights while in Marrakech and loved it. It's close enough to the square that you can walk but also tucked far enough away from the square (on a little street) that you are able to escape the noise, hustle and bustle.
Our room was great - clean, beautiful and spacious. Breakfast on the balcony in the mornings was wonderful, and it was a real treat to have the entire place to ourselves.
Our only complaint would be the value of the private dinner party that the owner invited us to. While he was kind enough to drive us to the outskirts of town for an otherwise very enjoyable dinner, we were surprised to find the dinner billed to us at a rate much higher than what we would have paid for a comparable meal in town - I believe it was around 25 EUR/pp (which believe me - this is expensive for Marrakech)
Other than that we loved it and would highly recommend - just avoid any invitations to dinner at the owners place.