just to be sure - this is Metropolitan France not France overseas... eg Corsica etc etc?
N-S runway isn't very common in France proper - so I'd guess somewhere away from the Atlantic/Channel costs
Doesn't seem to have extensive facilities so not a major destination for scheduled services. No major road up to the airfield so probably away from a major town. No visible car parking, no aircraft parked up. Those turning circles look big to me - bigger than you'd need for a King Air or similar - looks like it might handle the odd ATR or business jets
But still looks a bit smart to me... is it used by one large business or Govt organisation for example?