There are many things to do here, as with most Moroccan cities it is enough just to wander around and adventure where something takes your fancy.
In the Kasbah Oudaia there is an amazing cafe that looks over the sea, where you can drink mint tea and eat sugary treats. The staff are very friendly and you can stay as long as you like soaking up the atmosphere.
There is also a large and tranquil park next to the Hotel Sofitel, where people run and play football etc. You can also use the pool at the Sofitel for a charge. The park is a 10-15 Dirham taxi ride 10 minutes from la gare central.