Never been to Waverly Hills myself but I've heard so many people mention that basement specifically. There's something about certain locations where the energy just feels off and basements tend to amplify that, whether thats because of the confined space or something else going on.
We've got a few old sites up here in Northumberland and I've had that same "wrongness" feeling in underground spaces before. Like your body knows before your brain does.
What exactly did you feel? Was it physical like pressure or temperature, or more of a mental/emotional thing? Genuinely curious because the accounts I've read about Waverly Hills vary a lot and I wonder if different people pick up on different things in the same spot.