We have been coming to the cabins in this park for 3 years now. They are very basic, with no running water, but comfortable. The bathhouse is very well kept and close with hot water. You have to book 6 months in advance in the warmer months.
Of the hikes, the trails along the Deerfield river are the most beautiful. There are some loops that are short enough, even for small children. The pool and river are also good for hours of exploration and play.