cleaning motorhomes
France is well supplied with commercial car wash facilities, & not usually part of a petrol station, also associated with supermarkets. These have power washers etc. alot of them seem large enough to cope with a European motor home. Eg there is one by the petrol station at the Auchan in Boulogne just off the autoroute, one in the grounds of the Leclerc supermarket in Neufchatel sur Bray (between Boulogne & Rouen) . This last is also a good overnight stop(the supermarket carpark) - I use it every year returning from Le Mans, & at other times. It is quiet & undisturbed, & handy for breakfast croissants, although there is a better artisan bakery up the hill in the town.