Stayed here for 5 nights with my girlfriend last June, and it couldn't be a better choice. Location is spot on, just close to Djemaa El Fna right at the center of the Medina. Some might argue and complain about the noise that comes from the streets at night, but I think that's just part of the experience. The view from the terrace is incredible, on of the best sunsets in Marrakech's and the terrace itself is a great place to chill out in the afternoon, sipping a mint tea and resting the bones after a day in Souqs, or just to enjoy breakfast (which is included) and getting ready for the day. The staff is extremely helpful and gave us a very warm welcoming. Christophe, the owner, and the guys (Andrea, Younes did I get the names right?) were always available to help us out giving us information and all sorts of tips about restaurants, places to visit, transportation, etc. that were essential for us to enjoy even more our trip to Marrakech.
You can book a transfer straight from the airport to the Riad, we were also able to book a tour to Ourika Valley and visit the waterfalls with a driver and guide included during our stay.
The rooms are very clean and beautifully decorated (as the entire Riad, by the way). We stayed at a kind of small one but there are bigger ones on the other floors, and we really didn't mind the space as it was very confortable.
Totally recommend Riad Andalla, specially for couples who seek a romantic escape. Perfect location, excellent staff, clean and confortable rooms and a typical Moroccan ambience for a very considerable price. What more can you ask for?