People tend to check in during these times:
Major Williams Hall contains offices for various departments in the College of Liberal Arts and Human Sciences.
Avoid the elevator, it is very slow and sometimes will stop mid floor.
I hear room 125 is where the Eastern-bloc party is at.
If you've ever considered suicide by GIS, visit room 102.
Find the chair and desk on the fifth floor near the elevator for a nice view while you're studying.
Second floor lounge is a good, quiet place to study. Also, fifth floor is where the cool kids hang.
The best study spot on campus is here. Third floor, middle of the building by a window you can see shanks from. Desk, chair and quiet