I thought about something similar to this a few months again but I put it on my ideas-to-implement list (which is actually nothing but an organized form of procrastination). Now thanks to Jeevs, I see that this method works if you WORK it.
I am taking action right away, buying the domain and setting up the site. I gonna get in touch with some hotels here in person and see if they are interested. If I do not get enough customers, I will go ahead and contact other hotels in nearby cities. If you get the ball to start rolling, you can make big bucks down the road, particularly if you start ACTUALLY getting them leads.