The content of this module is a solid 5 stars. The editing and cohesiveness of the instructions to run it get... 2 stars? Whole paragraphs from the third sublevel are pasted onto the page for the second.

The second level is a great trap, but the way it's described, I've seen 5 different DMs run it and none of them set the trap up in the same way. It creates good replayability, I suppose, but not in the way you wish it to...

The statues on every floor are a good bit of continuity, but there's some confusion on the first level as it assumes the party ran the first part of the adventure, so they know why everything is the way it is.

The final combat gives the DM a load of options to challenge any party composition. 3.75/5 stars