Don't read this comment if you want to figure out a strategy on your own.
This was just my strategy.
Still reading? Okay.
My strategy was to move/push two objects near the corner of the room and get in the corner. Then I stood in the corner and the rest of the furniture block each other. The only furniture you need to worry about are the ones next to you in the corner. So you can mash the stun key to stun them before the ghost attacks you haha