Check out kayak.com. Someone here mentioned them before and they seem to do a great job. They have DO hotel prices for that night for as low as $79.

Edit: Or not. It helps if you type in the dates correctly. Still, $143 for a Holiday Inn Express in Carpintiera.

Edit again: Oh. In the city. Helps if I read, too. Still, there are a lot of listings that ask you to call and many of them look decent.