I would have enjoyed spending longer in Fez but we moved on after a bad experience between a gay member of our party and a hustler who made friends with us, suggested a fun trip to hot springs out of town, then used it as an opportunity to keep asking for money while allowing himself to be blown and not reciprocating, then after our friend didn't want to hire him the next day, had his kiddie cohorts shadow us through the medina, before showing up and delivering a tirade as the crowds passed by, about how my friend was a pervert etc. and he himself was a good Muslim!

Another couple in our party were aid workers with decades of experience in Africa who would shoo away anyone who approached us. The day before they arrived, we went for a walk, got lost in a residential area, and were approached by a little guy who said he was a licensed guide and pulled out cards showing he had been used by US diplomats etc. I was a little suspicious but we let him try to find us a better place to stay, eventually winding up at a palace in the middle of renovation. We thought we had found the jackpot, but when we got the other couple and the husband's mom over, the mom vetoed it and the wife brusquely didn't want anything to do with the guide. After more embarassment we wound up at a regular hotel, and the guide blew up and told us we Americans were imperialists who thought we could buy anything.

Compared to that, Marrakech had no major embarassments, just the regular aggressive sales and outrageous first prices.

I would also recommend the Sahara and mountains. We wound up chartering a van to be driven from Fez through the Atlas to the Sahara for Bedouin tenting / camel riding on the dunes, then through Ouarzazate (a second rate Vegas for the French, skip it) and back over the mountains to Marrakech. The oasis valleys at the edge of the desert seemed magical and I would have liked to have spent more time there.