Enter the adjoining room and stand on the blue dot.
Walk through the boiler room passed the large iron machine with pipes feeding out. Pass the water cooler and go through the open doorway. Walk through the next room towards the stairwell passing by the cardboard boxes stacked in the room. Walk up the first few steps of the stairwell.
Turn slight left and walk through the two doorways. Stop at the bottom of the stairs.
Leave the boiler room passing the water cooler. Walking into the main room and take a left, go up the stairs and stop on the fourth stair.