I ran this adventure as a one-shot for a new gaming group, and it was a perfect fit: An honest-to-goodness dungeon delve with a compelling backstory. It can easily be wrapped up in two sessions with no loose threads, or conversely, the DM should have no difficulty pulling some of those threads loose to tie into half a dozen other plot hooks if they'd like to turn this into a continuing campaign.
There's a great mix of combat encounters, traps, and situations that can be resolved creatively. Overall, it's a really enjoyable mix of the familiar and the surprising. New players and grognards alike should find plenty to enjoy in this introductory adventure!
[5 of 5 Stars!]