We traveled around a lot of Morocco this summer but our stay at Merzouga house were by far our best few nights in the country.
The Berber style guest house is absolute beautiful, it looks and smells like an oasis. We sat by the pool at night looked at the stars and drank some Moroccan tea. During the day we sun bathed and swam in the pool.
Lassan and his family are absolutely amazing, they not only arranged everything for us but were kind and interested in how are stay with them was. We arrived very late and they went out of their way to make us dinner and bring us tea. Lassan even sat with us and chatted about Morocco - since we really enjoy speaking to people on our travels this was an absolute treat. We took a walk around the village with Said, I would highly recommend this. Said is very knowledgable in Berber culture because he is studying it in Fez. It was really interesting to hear from him about the village, the culture, and the about the dessert.
If you do end up going to this area of the Morocco my two suggestions would be (i) go dessert camping (ii) figure out your way there and back before hand because it's tricky. Either take a bus or rent a car but don't use a taxi driver our experience was that our taxi driver got lost quite a bit. Morocco is fairly easy to get around with a map so, if you don't want to take the busses, just save some money and rent a car!