My wife and I rode it a few years ago. It was great! Smooth hard packed crushed limestone, well maintained, and very scenic. We were also there in the summer, but just after a cold front had gone through, so it was nice weather. For overnight stays, we used B&Bs and hotels, but there are also frequent campgrounds if you want to bike camp.
We saw people riding in on road bikes with skinny tires, but we were on hybrids which we thought were perfect. Enjoy!