Stayed at a few in eastern france en route to Interlaken last year.
Boiry Notre Dame – west of Arras, OK, on edge of small village, has swiming pool, fresh bread van daily, super market about 2 miles away in Vis en Attois.
Laon – edge of the town, wooded, didnt see a swiming pool. There is a centre parcs type place just south at Chamouille.
Val de Vesle – SE of Riems, close to the motorway, clean but no swiming pool.
Chalons en Champagne – not stayed but its in the town to the SE of the centre. Area it was in looked a bit rough.
Lac du Der, SW of St Dizier, quite a few campsites around a large manmade lake – Rutland Water on steroids, lots of tourists, lakeside 'beaches' Long flat fast cycle route round the lake. Some campsites seem better than others I stayed in one on the SE side of the lake which was a bit ish.
Langres – no swiming pool but on the ramparts of a walled town. Good for a stop off.