In reply to AWP84:
Officially now closed in winter as per a sign that appeared a couple of years ago, and requests campervans and Motorhomes to go elsewhere at all times of year. As per the original rationale for providing the facility.
Unofficially operating as it always did, turn up keep a low profile (there is a private residence close by). donations now requested; put your money in the box. Stay a night or two, move on. Very basic Toilets (no showers), and tap; only ever found these closed in a very hard winter. Stayed many times in winter without issue or comment since the new signs.
If Toilets closed the visitor centre ones are often open even in winter, and the village has them as well.