This has been a sometimes fun, but most often infuriating discussion between my wife and I, as well as other family members and friends whenever we bring it up: which side of the bed is the front? Is it the foot end? The side where the heads are? Or are you a rebel and is it the side you get out of bed at?
If only one side of the bed is touching a wall, then that side is the back. The opposite side would be the front. The remaining two sides would be the sides.
If your bed is in a corner with two sides touching a wall, then I would say both open sides would be considered the front.
If your bed is in a nook with three sides touching a wall, then the one open side would be the front.
If your bed is in the middle of the room and not touching any walls, then there is no front.