No business unit is complete without an identity, the look and feel that shows your customers how well you are going to be delivering your products and services.
Chances are you allready have a logo, if not - and unless you feel very confident when it comes to graphic design - it is recommended you get a professional design studio to help you establish one.
Your logo is featured on all your printing material and on lots of other stuff as well. Don't over do it though, remember that most guest will know where they are staying. Printing costs money, keeping generic materials around allows you to change at a moments notice. Most printshops give good prices if you print bulk quantities, but stop and think; Do you really need 5000 copies of a form that is rarely used?