Entrepreneur magazine's book Start your own Bed and Breakfast by Terry and Rob Adams this is a light harted look at starting up in the trade though the section on questionaring customers is useful in its suggestions for you to include.

There are also good tips on how to go about choosing a property which would be useful for anyone looking for an ideal property to get started in.

Another good section of tips is what to look for if you are buying an operating business occupancy figures etc.