Last November when we saw a snowstorm heading for the local mountains we loaded up our 24' C and headed up. One section of the campground, {Fool Hollow Lake in Show Low AZ} had full hookups and stays open all winter.
We only got a few inches but thoroughly enjoyed hunkering down snug and warm in our coach. Taking walks as the snow fell was gorgeous. The 35K BTU furnace got a workout but kept us nice and toasty. It was a great change of pace from our normal camping and I recommend the experience highly.

:B