Starfox
Hero
Module B1 goes further than usual in the description department... There are rooms that really stand out, indeed are of iconic status, such as the pools. There are some lively features, such as a certain cat. In the end, though, too much is -- considered in abandoned isolation -- just enigmatic rather than engagingly mysterious.
The missing ingredient, of course, is monsters.
Bold is mine.
The missing part, to me, is plot, not monsters. As a storyteller, no amount of description is really interesting unless it is used to reveal a plot. Any plot. The background and history of the world is a plot, but also a background to all the smaller plots the DM introduces to the players.