This is a pretty good dungeon crawl, with a lot of rooms (a little more than 50) most of which are quite detailed. Combat, traps, exploration, riddles, good mix. But it suffers from being a somewhat poor conversion from 5e or Pathfinder, I guess.

Firstly, some of the monsters are not described. You just get stat blocks at the end, no details about what they look like or what they are. Most notably, what the heck is a Gwiddon?

Secondly, old school games rely on treasure for character advancement. There is almost no treasure in the module. A fair amount of weak magic items, a couple of gems and pieces of jewelry (dog collars) and no monetary treasure.

Lastly, supposedly the module takes place in a single night, but has over 20 combat enounters. The module gives places where characters may take a "short rest", which I guess ia a 5e thing. Most old school games don't have that, healing can take a while, even with magic.

None of these are major issues (except the lack of monster descriptions) but they detract from an otherwise excellent dungeon (well, tower)