(Solution)
Room: 4.127 Exits: E  SW  NW  U       (Shortcuts)

4.127

Garage

It figures that this facility would have a parking garage--and a tall one, too. Just your luck, the elevator is kaput and the garage is empty, devoid of anything that looks like it might be a clue, until you've climbed the stairs to the fourteenth floor, where some parked cars form a line.