I highly recommend Hocking Hills- the woods are beautiful, the trails are lovely, and the caves & other natural features are really amazing. Just don't stay at Deer Watch cabins. This was several years ago, but they didn't have separate smoking and nonsmoking cabins. Ours smelled like an ashtray. Some cabins advertise "softened" or "filtered" water, which I highly recommend. I grew up on well water, but the sulfuric nastiness that came out of those pipes was something I hadn't experienced. Lastly, the hot tub itself was tiny, shallow, and had 4 jets - but that's not why we avoided it. There was so much chlorine (or, more probably, chloramine) that we gagged just getting near it. When you add smoke, sulfur, and chlorine together, it makes some horrible homemade mustard gas. Let's just say the place stunk to high heaven.
I was quite glad to get back home to my non-stinky, multi-jetted, high end hot tub. I realized right then that I'm a Hot Tub Snob, and proud of it.