I used to have to stay by myself a lot in strange houses - I used to be an Animal Aunt, taking care of peoples' animals and homes - I have a fairly vivid imagination, and there was one house in particular I would never go back to - it had a really unpleasant atmosphere, and I spent most of my time there outside with the dogs in their haybarn (they had horses as well)
and it was fairly deserted with no mobile signal around. Fortunately I only had to do one night there, and I was so glad to get back to my own lovely home, and OH. I do leave a light on at night even at home - I'm far more scared of demons etc than I am of burglars etc which I know is really silly, but my dogs would let me know if anyone broke in.