People coming and going, leaving you alone.
short answers
lack of interest
You start feeling uncomfortable, timing yourself so as not to disturb anyone, trying to be the perfect visitor… and even then the feeling doesn't improve.
This type of visit is exhausting because it makes you adjust too much to fit into a place that makes no effort to welcome you.
And a visit shouldn't be an endurance test.
What all these houses have in common
Something similar happens in all of them:
in one you are not wanted
In another, the environment is toxic.
In another, they just use you.
