We stayed 4 nights at Riad Ambre et Epices and had an amazing time.
Patrice and staff were extremely friendly, helpful and went out their way to make the stay as enjoyable as possible. We asked them to arrange taxi transfer to and from the airport which was well organised and took the hassle out of this part of the journey. I'd recommend this as the Riad would be very difficult to find unguided!
The Riad itself is perfectly formed and the roof terrace was a lovely place to relax in the afternoon heat. Our room was a little small, more due to the fact that we'd got an online deal than anything else and can't be held against the Riad (in future I think I'll book direct).
The location is excellent, just a 5-10 minute walk to the souks and 15 minutes to the new town. There are a wealth of good restaurants close by. We ate in the Riad one night and also had lunch on our last day - the food was excellent and I would highly recommend it. The breakfast was also very good with something slightly different every day.
Very happy that we chose this as our place to stay in Marrakech!