I think the ultimate vacation would have to be a stay in the Fox Hotel in Copenhagen, Denmark. Each room has been individually designed by a different artists. Not only would you be in an entirely different country, but each night you returned to your room it'd be like entering a new world. Heck, with rooms like these why would you leave to begin with?
Oh, did I mention that the hotel restaurant has sushi? Room service, please! But you can rent bikes! Ok. maybe I'll leave just once - if there's a bike involved.
Also, I have a prom date! *PHEW* That's one less thing to deal with now.