There's one in every room of the hotel. One in practically every room of every hotel in the world. It tells all about it there in the first page or so.
10 seconds sound clip from the The Strange Love of Martha Ivers movie soundboard.
You can hear this line at 00:39:51.922 in the Blu-ray version of the movie.
Quote context
[...]
- I won't use your toothbrush.
- You don't care what kind of a book it is?
- It isn't my book. Somebody here before forgot and left it.
- No, no, no, don't get up. I want to look at you a minute. That's really a picture.
- Yeah, we're leaving tomorrow. That is, if the car is fixed.
- Sure you won't mind me being a passenger?
[...]