Hey
I don't know for Le Mans but for Paris, there's a french legal issue with installing them in underground parkings like hotels or major shopping malls (no space available downtown in the streets): no electrical charge above 22Kw is allowed underground.
The compromise -so far- would be to install it on the parking lot of the Gennevilliers Service Center but it's not opened 24/7 or week-ends so you'd need to call the security company to get a code to open the gate.
You may need to look at the ChaDeMo option.
Also if you have a Type3-Type2 cable + Double Charger, check ChargeMap for the 22Kw free chargers in hypermarkets like Auchan and Leclerc so you can get 100km per hour at least.
Make sure you use their website, not their app, so you can filter your search for fast charge or you'll have a zillions AutoLib & co at 16km/h popping up
HTH.
E.