I had a long stay at Riad du Ciel and was glad I had chosen this wonderful place. The riad is located just north of some of the more bustling areas of the medina, which means a short walk to most of the attractions you'll be interested in visiting. The riad itself was beautiful -- a very peaceful courtyard and my room (the Music Room) was comfortable (good A/C, a nice little private patio, and a bathtub). Other guests have noted street noise at night -- from my experience, the Music Room was very quiet and I didn't have any trouble sleeping.
Breakfast in the morning was delicious and plentiful.
But the best part of my stay was the kindness and warmth of the riad staff. Simo and his colleagues all appeared genuinely interested in making my stay comfortable and fun. I would strongly recommend this riad to anyone.