Khu cắm trại caravan tại Luxembourg

"Very clean and comfortable, with beautiful views of the river and fields. There was some confusion with the check in process. We arrived right at the posted check in time and there was no one at reception and no one answered the phone number that was posted on the door. After about an hour, we almost gave up and found somewhere else to stay, but finally found another phone number on the website and got through to someone who then came and checked us in. I think we were supposed to let them know...