Done France on motorcycle lots but I am over in August and need a decent family stop near to Calais. Hotel, B and B in fact anything nice you would stay at with your kids.
There`s two of the 'B&B' places just on the outskirts mate.
I`ve used them both.
One has a big supermarket nearby with the superb Flunch restaurant in it.
The other has an ace Australian themed restaurant/bar opposite.
Look on the B&B website for them.
But Calais is bursting with all kinds of accommodation anyway.
Or,travel about 30/40 minutes further and stay in St Omer...lovely.