A decent street map of the town posted on the wall of each room.
Instructions on how to set the alarm clock.
A notice on the cupboard door if there are extra pillows/blankets inside saying "extra pillows/blankets inside".
An iron and an ironing board.
Instructions on the room modem connections. Like where is it (in the wall, in the telephone handset). Does it cut off the room phone line when in use, or not.
...and in the bathroom - soap! No, not those liquid soap dispensers which are unusable if you are laying in the bath, but proper soap.