Three simple letters could inspire the “Hallelujah” chorus: DND, or do not disturb. One sign hanging on a doorknob, and the day’s work was shortened by half an hour. Two signs? Pure heaven, but only if they remained there until my eight-hour shift ended — otherwise I'd have to circle back and clean the rooms. My daily list of 15 rooms (out of 325 in the hotel) consisted of DOs (due out) and Os (occupied), which in housekeeping lingo meant the guests were scheduled to check out or were staying another night. An occupied room was less labor-intensive (making the beds rather than changing the sheets saved me 20 minutes), but there was always the possibility the guest would stay in the room while you worked.

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