The doona feels so much better with a sheet under it. I hate sleeping without both sheets.
Our heating turns off at 10.30 and back on at 6.30 because I read somewhere that you sleep better in a cold room. No idea if it's true or not lol.
I think mine isn't on all night. exDH set the timer so I have no idea! The radiator is never hot in my bedroom so maybe should get it sorted!