My girlfriend and I stayed at the gardens after 4 nights in the medina, and it was a delightful change of pace. We stayed in one of the standard tents, which was clean, relaxing, sumptuous and wonderfully air conditioned. The bathroom was a bit of a squeeze, and the shower was quite weak.
As it is in the middle of nowhere, you will most likely eat all your meals here. The food is really good, and very reasonable. Traditional moroccan cuisine, with 2 courses for lunch, and 3 for dinner. It is a set menu which changes every night, and you have no choice (separate meals for vegetarians). I'm sure this is to save costs, but it also ensures that the ingredients are really fresh.
We will definitely return again.