You’ve been already to Fez, right? For the previous edition of the Morocco Business Forum?
Since you’re part of the organization committe (or I am mistaken?), how come yo do not know about places where to stay? I personally did try to get some information about this (since I am interested in attending the forum) and I received some information after contacting the website. The cheapest hotel was this one:
3 Star - Hotel De La Paix - 250 Dirhams (single room / bed breakfast)
No idea if it can get any cheaper, but according to my experience with Moroccan hotels: the cheaper, the worst!
Have you ever heard of The View From Fez? Maybe you can contact them for info about hosting in Fez. It’s a riad’s blog, and they must be aware of the best offers of the city.
Any result you get, please do share it with us in here too, I’ll appreciate it.