Woodloch Pines if you are willing to drive a bit more - 5 hours
There's also the Homestead or Greenbrier of course
We're looking for something similar for early November and I'm having trouble finding something, also considered Wintergreen and Massanutten but, like you, think the reviews just sound too iffy
I want something nice, but not too high-end with lots for kids to do (we've been to Lancaster before - the Doubletree is fine for what it is, but it is not really a resort - I actually think the Best Western Eden Resort is better and better located although the Doubletree has a bigger indoor pool)