Never been to Waverly Hills but that cottage thing rings a bell with somewhere closer to home for me. There's an old groundskeeper building on the edge of Durlston near where I live in Dorset and I always get a weird heaviness near it, like the air's thicker or something. Hard to explain without sounding daft.
With shadow people specifically I've noticed they seem to cluster around liminal spaces - buildings on the edge of larger sites, doorways, that sort of thing. A caretakers cottage on a property like Waverly would fit that pattern pretty well I reckon.
What kind of weird are we talking? Physical sensation, visual stuff, or more of a feeling? Would help to know what others experienced before I wade through the whole thread.