When I was in seminary, me and my friends stayed at someone’s empty apartment for Shabbos. We didn’t know them at all. We were four girls and they had left instructions for us to sleep in the master bedroom and the guest room. And they hadn’t taken the linen off. So I found myself sleeping on the mans bed. On top of his linen. I hadn’t brought my own because they had told us it wasn’t necessary. They had another bedroom so it wasn’t a space problem.
I dunno. I would have preferred them locking the master bedroom door.