We stayed fat the Dar Naima or 4 days from 2 Jan 07. It started by waiting 20 mins at the airport for the pickup who were late but they were friendly and took us right to the door of the Riad and helped with the luggage on the last leg of our journey (about 500 metres from where they parked).
The room, the Smahane, actually consisted of 3 small rooms, the bedroom was just larger than the bed. The bathroom shower didn't have any pressure and the bath was a brick/tile fountain-like thing that took over 30mins to fill. So no lovely hot showers or laying in a bath. And a small room to sit in. All clean, a bit dark though.
The owner never once said hello which I found unfriendly. Only the doorman who let us in/out of the Riad spoke to us in French. And warning, when we went to pay, with all bags packed and rushing to the airport, the owner said we had to pay about 5% extra if we paid by card! I thought this was illegal and would have liked to have been warned in advance. Not nice!
In the morning it was extremely cold where they serve a simple but nice continental breakfast with great coffee. The girl that served us had a bad cold (which we both got!) and when she dropped a bread roll onto the floor she quickly picked it up and without a thought put it back on our table with the other rolls. Yuch! They lit a fire but it didn't warm the room instead it totally filled the Riad with smoke and a strong burning odour. Not at all pleasant. Only on our last day did they put a fire guard in front of the fire and it seemed to stop the smoke but also alas the heat!
We needed help once to understand where we could park our car near the riad but the staff really couldn't help. I was annoyed to find that the owner had maps on the wall of her office when we paid.
All in all I wouldn't stay again. It is a lovely Riad but I didn't like the small rooms which don't look small in their website photos, absent unfriendly owner and the sting in the tail (%price hike for credit cards).
We stayed in a Hotel on the last night the Atlas ASNI for about £40/night and then I wished we stayed there the whole time. Staying in a Riad in the Medina is overly expensive for what you get and to me overrated. I think the Riad night be better in the summer. However, the Riad was pretty and gave us an interesting more authentic feeling, was great being near the Souks and the Jemna El FNA square. But the Atlas Hotel was a short walk away and definitely worth it. Getting out of the hussle and hassle was while worth it.

Like many of the city's riads, Dar Naima's a devil to find. You'll probably end up employing one of the local kids to help you out. There are no shortage of those, though. Once you find it, Dar Naima's an absolute treasure. We were greeted by an elderly Marrakchi, who spoke not a word of English - but then that's half the fun.

The riad is full of Moroccan magic, especially if you arrive at night. A little dog eared perhaps, and our room smelled slightly musty, but it's brimming over with atmosphere. Every question we asked or problem we had (not that there were many) was greeted with an enthusiastic smile, and a genuine willingness to help. We were made to feel really welcome, and not at all like outsiders.

Highly recommended for those wanting to throw themselves whole-heartedly into Marrakech.