We have stayed at Klein Strand its quite decent. You can reach Brugge by bus or car, its not far away. I understand that Camping Memling is a bit nearer and perhaps in walking distance of the centre.
David
Don't forget to leave a review of the French and other European campsites you have visited!
Camping de Meidoorn at Sluis - just over the Netherlands border and close to Knokke - and by bus into Brugge if you wish, in case you have a motorhome, although underground car parking in Brugge is easy and secure.
Stayed at Memling 5 times now. Very busy site, quite expensive, geared up for motorhomes really. Don't expect a big field where you can pitch a big tent! Either book in advance or get there early. You can walk into town but its long. Big Del Haize and CarreFour supermarkets round the corner.
We've only ever stayed one night before catching the ferry home, wouldn't want to stay longer. Functional but not relaxing. Expensive WiFi too!