OOOh, Cathy,
Have a great time. If you see any of my friends wave to them for me
My recommendation would be Stowe in Vermont. Louisa and I spent a few great breaks up there (in each of Winter, Summer & Fall). It's a shame you are a little early for the Fall. Two very different plus points about Stowe - it is where the Von Trapp settled and the lodge is now open to the public as a hotel / tea room. It is also close to the home of Ben & Jerry's ice cream!!
Here is a photo of me in the "Flavor graveyard" at Ben & Jerry's, next to my namesake flavor
There are so many lovely places up there though that I am sure you will have a wonderful time! Let me know what you get up to.
Mark