You begin looking at a couple of white doors. Turn slightly right and exit the bathroom you are inside. Move out into the hallway and turn right. Once you've turned right there should be a washer and dryer on your right. Continue past them to the end of this hallway, and the closed double doors. Once you've reached those, turn right and take one step towards the corner. You should see a staircase just peeking out to the right, but you are done as soon as you've stepped to the right of those double doors. You should see a little vent on the floor level next to you, and a scale just to the right of that. You're done.