As Leanna says, Skanes is a very short hop from the airport but apart from hotels there is nothing much there. Monastir itself has a marina and a medina (less hectic than the one in Sousse), together with the mausoleum of the late President - worth a visit but hardly a reason to base your holiday in the area. Sousse is indeed the next nearest and from there you can get into PEK easily if you fancy a change. Depending on your age and taste, you will usually find somewhere open late for entertainment, though that in the hotels may finish at midnight.