Any NJ, NY, PA bees that can help-

We are visiting my family in central NJ for Christmas. We've been floating the idea of taking one extra night and leaving C with my parents so DH and I can go away somewhere and relax, sleep without a baby waking us up, feel like a couple... All that good stuff.

Any recommendations of a destination that's within an hour and a half of central NJ, has something interesting to do, good food to eat, for right after Christmas? Not NYC since I used to live there, too expensive, and we are looking more for relaxing than hustle and bustle. And of course doing this totally last minute.

Thanks for any suggestions!