There are three 2nd floors in the PL building--yes, really! Here's how to get to PL-2005 the instructional lab used by the librarians to teach classes and give workshops.
1. Use either one of the main entrances, south (photo on the left) or north (photo on the right), then go to the hallway on the first floor with the two sets of elevators.
2. DO NOT USE the first set of elevators.
3. DO USE either the the second set of elevators or the stairs.
4. Here's your destination visible at the top of the the stairs near the elevator.