I've got two twin beds "joined". There are basically four independent components: two mattresses and two bed bases.
They are pretty uncomfortable to sleep on. They shift as I move at night. They aren't fixed in any way.
I was thinking of connecting them by a strap. Something like this, but not that fancy. It would help to solve the upper part. The lower one would still be free and detached.
Do you have any idea how to make this thing stable and interconnected?
Thank you in advance.
Update:
It's a rented apartment, and I am not supposed to sell things or change them significantly.
I don't wanna buy new furniture.