Didn't even know that there was a Library Hotel in NYC...however the theme might fade away since the Hotel used the Dewey Decimal System to classify their rooms and setup themed rooms that reflect the classification systems organizing principles. It turns out that OCLC has sued the hotel for trademark infringement. I didn't know Dewey was trademarked...I think it's a waste of time and money. Perhaps when I venture to NYC I'll make an effort to stay at this hotel if it survives the lawsuit.

More info at NY Times. (free registration required)

More info about the Library Hotel.