Booked on strength of TA reviews and were not disappointed, even though my wife and I were the only diners that evening. The quality of the food was excellent, bettered only by that in the Riad in which we were staying (Riad Badi) and far better than other much more expensive restaurants like Le Foundouk and Al Fassia Agudal. We both had the Kafta Tajine as our main course and a bottle of good local red wine. The owner was a perfect host and even the chef/cook stopped to ask if everything was OK before she left for the evening.
We looked for the restaurant during the daytime and, perhaps we were lucky, but found it quite simple to locate, perhaps 10 minutes walk from Jemaa El Fna. One of the staff offered to walk us back to Jemaa El Fna as we were leaving, which was very kind but not needed.
As an aside: the two best quality meals we had in Marrakech were in small Riads were you had to order the food a day in advance. Being small, the Riads did not have a lively restaurant ‘buzz’ but the food quality made the other, more expensive restaurant meals appear very average in comparison. My advice would be to eat here, your own Riad, or somewhere similar at least once in Marrakech just to see what you may otherwise miss.