NYC's Library Hotel is arranged by the Dewey Decimal system. If you stay on the 5th floor, that's the 500 section (science); if you're in room 500.001, that's the math room. (Why isn't the math room 510? This is not made clear.) On the one hand, NYC is a publishing town, so this might be a clever way to attract bookish folks to stay in a hotel. On the other hand, this might be alienating half of those bookish foks, what with the whole Cutter versus Dewey debate that's been going on all these decades. And what about the tagsonomists? Do we have each of them stay in multiple rooms at once? Nonsense! Oh man there's no way I'm staying at that hotel, it goes against everything I believe about information architecture.
In other news, it's taking me a while to figure out travel plans.