I have read a lot of books on this subject as I am always looking for new ideas and so I am taking the liberty of doing a brief review of them.

The Complete Idiot's guide to Running a Bed and Breakfast by Park Davis and Susannah Craig.

this is by far the most useful book that I have read so far which is why I am including it first.
this is a clear and concise book which is easy to read as some of these books as a bit to figures orientated.

It is full of useful tips on marketing and sales and even if you have the right personality for the job. The only downside is that it is written for the american market and there is a large chapter on regualtions which is not relevant. All in all a good read.