I think the closest thing to massage that is culturally acceptable is some guy rubbing off your dead skin in the Hamam and making kissy noises at you...YES!

Maybe you added a kissy noise CD to your ambience music selections...

Although in a big town like Fez you might be able to hook up with some of the upscale Riyads (fancy "bed and breakfast" hotels) to offer the option to foreign guests. You might also be able to find clients among expats. The biggest problem will be advertising your services in a way that doesn't attract the wrong kind of expectations. You'd be safest restricting your practice to people of your gender (which I assume to be female). Men touch other men in public in Morocco and women touch other women (as friends, not suggesting sexuality here). Cross-gender touch is always at least potentially sexual and you might find yourself dealing with culturally uncomfortable situations. I agree with 'isa that French is the likely language you'd need to know if you were going to work in hotels (to talk to the management, if not the clients).