I had a wonderful hotel experience, broadband and all, at the St. Julien Hotel in Boulder, CO. It was the kind of experience that made me wish I was there for more than one night.
First the meat of the matter:
Broadband-Wired In Room and Wireless Available
Speeds: 800k in both directions at 11 PM at night/1 meg in both at 6 AM
Voice over IP: Worked Great via Gizmo Project, zero latency
Power Outlets: In great locations
Room lighting: Great for working from bed as well as desk
Grade: A