Hmmm. Ok, this was the worst experience we've had, but...
Due to a cockup with the Building Society we had to declare ourselves homeless and have our house re-possessed. The local authority moved us into a 3 story emergency shelter next to an old stone chapel.
I went first to spend the night cleaning the place to make it fit enough for my wife and our new baby. Had a friend help and we slept downstairs. All night I could hear very quiet screaming if that makes sense.
We couldn't get our furniture around the stairs, so filled the attic with boxes, turned the middle floor into a living room with lots of cushions and slept on the ground floor.
Then we started to have things happen. My daughter couldn't be left without screaming. If we went out we'd come back to find the dog hiding under the cot. We'd sit in the 'living room' and shadows would be cast on the wall from the hallway, although there was no one there.
I'd wake up and find my wife laying awake, and eventually we had to leave a light on, started with the kitchen light, then the kitchen and the bathroom (on 2nd floor, next to living room) light, then after a couple of nights the landing light.
As we had an open plan staircase and I couldn't sleep with all these lights, we compromised with a bedside light left on.
Another couple of nights and I woke up to a really awful sense of menace. Got dressed and was convinced something was coming downstairs from the Attic. My wife woke up to find myself and the dog, guarding the stairs and growling (me and the dog) I had a steel broadsword and it was a horrible sensation.
My wife, put my daughter in to her carrycot as we covered her back and went to phone a taxi.
We turned up at my parents house at 1 in the morning and stayed there refusing to go back alone.
That was the worst of many experiences we've had. Thankfully the place was demolished a couple of years later.
Ogre
Note: I scrounged a lift off a council engineer one day and described our experience. He went white and called me a complete b*stard.... He was on his way to the house to turn the power off, alone..