When we were in Russia about 10 years ago, they had only twin beds. I knew enough Russian to ask if they didn't have a room with one big bed. The answer was Nyet.
I have an afghan made with worsted weight wool in afghan stitch. Very heavy. I keep that on the shelf near the bed, and if I can't get to sleep, I put that over the quilt on the bed on my side. Works well to get me to sleep.