Going out suggestions please:-) (Casablanca)

Hey!
I am going to be traveling sólo in Marocco, mailnly for surfing purposes. But I will be in Casa for one day to check out the city. So on the 16th of August, I would appreciate a suggestion to where does an international crown go to on Saturdays for a nice drink.
I am not option for a dance club, as I will be traveling further early the next day, but a glass of wine in a nice place sounds like a goo idea.
If anyone also wants to keep me company - I would be more than happy.
Cheerio from Germany!
Anja