I know many are having this problem, I am to in SMP at least. Me and my 3 friends have been playing SMP all night and I remember this problem from PC Beta days but easy fix in singleplayer keep the bed from the wall 1 block from the top and on the side of the bed, but cant seem to make it safe for 4 beds in SMP only 1 bed is safe and they all have the same position. Anyone having this problem in SMP to? SMP Beta is pretty glitchy/buggy bad version to start with IMO.
Edit: Also yes the rooms and outside of the house is well lit no dark spots in the rooms and no open doorways.
Edit: Also yes the rooms and outside of the house is well lit no dark spots in the rooms and no open doorways.