After the crazy-ness of the souks, we went to the Mellah and enjoyed it a lot. The sellers are a lot less 'in your face' and seem more relaxed and friendly. There are a lot of spice and argan oil shops etc; an 'pharmacist' might call you in - I suggest you go in as he will explain you a lot about the different spices, herbs, oils etc. Yes, of course they want you to buy something, but there is a lot less pressure than in the souks and you can actually walk out with nothing and they still will give you a smile.
On the corner of the Place de la Ferblanterie (spelling might be wrong:) there is a little patisserie selling a huge variety of Moroccan cakes. The owner is very friendly. He made us a box full of samples, explained the ingredients and how they are made. Recommended.
If you own or manage Mellah, register now for free tools to enhance your listing, attract new reviews, and respond to reviewers.