Bruges remains one of my favourite destinations. About an hour away from Calais there are a number of sites to choose from such as Camping Memling but my firm favourite is the barrier controlled aire at the coach station next to a marina on the very edge of the city walls. It is a tad expensive but the sheer convenience makes it worthwhile.
Whilst Bruges is quite small, there is plenty to do and, being a World Heritage Site of UNESCO, it is beautiful and very well looked after.
For me it is a great two night stop over and then if I am looking for somewhere a little less touristic I will invariable stay a couple of nights in nearby Ypres at the excellent Sport Stadium site within a few hundred metres of the Menin Gate.
Bruges rightly is centre of attention and makes a wonderful and uncomplicated weekend break.
https://www.visitbruges.be/en