is that really a desu brand television? you need to build a false wall in there somewhere, across a doorway to hide a small room or closet. do a good job with the drywall, try to hide it as best you can. paint it, hang a picture on it, wallpaper it, put a cabinet up against it so nobody even knows it's there. the cabinet covers the hole in the wall that allows you to get in and out. just slide it out of the way, slide it back when your inside. you need to put a sliding bar on the cabinet, so when you're inside and if anybody tries to move it, it will feel as if it's attached to the wall.  put some water, a blanket, a pillow, a flashlight and some packaged food you can eat in case you have to be in there for a few days. good luck anon.
Canada