First of all, definitely get the airport transfer as the Riad would be impossible to find on your own the first time! The Riad is small, quiet, very clean, cozy, and has a very nice staff (particularly Sandra the french woman at reception). Breakfast was included for us, and was absolutely delicious. The Riad is about a 12 to 15 minute walk away from the square, and conveniently has ATMs on the way the way there.
The rooms are spacious, have strong air conditioning, bathrooms are very clean, and Wifi reaches the room.
I removed one star not because of the Riad itself but because of a trip we booked through it-- we went on a day trip to Ouzoud waterfalls (which by the way is absolutely worth it, breathtaking place!) and paid to be on an airconditioned mini-bus. The bus was FAR from air conditioned, extremely cramped, and after talking to other travellers we realized we had paid a little more than everyone else by booking through the Riad. We felt we overpaid and were falsely advertised to.
However, other than that trip, this RIad is truly a relaxing and great place to come back to at the end of a day in Marrakech.