Wifi password
nearby restaurants
emergency information.
We also put in a couple pages of history about the house, and a breakfast menu. But all they really want is the wifi password.
.
Give an abbreviated first page with wi-fi password, breakfast time, how to contact you and no smoking statement....or what ever you need to reinforce. Then in small print let them know that there is much more in the welcome book if they care to look at it.
Then provide a page as an index for all other important information that is organized by topic: About the room (heat, AC, lights, linen changing, housekeeping times etc, use of TV/DVD), About the Inn (early coffee, details about breakfast, fireplace, common areas, map of the grounds and out-door sitting areas, using the keys etc.), About the immediate area we are in, Things to do and location of tourist resources, Emergency info (pharmacy, emergency care etc.), About the innkeepers (Most guests seem to read this and comment!).
I have found that this works well. Those who do not want to be bothered to read can find the critical information on the first page. Those who are here for a while and want some additional information can use the index to find the specific section they need or they can read the entire contents.
.