Very nice, and it fits the theme well, but not the restriction. Some of the puzzles were hard but library so understandable. Also, like the library hint.
About the restriction: The map does use have it, but it's subtle. It definitely made life harder for the map maker than for the players. This sentence, unlike the others, obeys the restriction seen in Bookkeeper's Dwelling. And this one does not! But this one does.
