We're going to start in the middle of a hallway. We should see some lockers on our left. We're going to take a right turn before the lockers, and take that hall. Take two steps down the hallway. Pass the round column on your right, and enter the second room on your left. It should be room 308. Once you're there just take one more step to be between the two white desks, and once you're there, looking at a painting of a building and a microwave, you're done.