I like the castle and the factions therein; and while I like the hook (PCs cursed by offended fairy), it feels a little distracting -- I might save that for a later adventure. I might also tweak a bit of the story/character description, e.g., Melendrin is described as childish and petty in the capsule description, but then in the adventure, he gives a lot of information and agrees to help pretty readily.
Viewing post in Shadowdark: Frostmire and the Baron of Languish jam comments
The curse being as distracting as it is somewhat ameliorated by the fact that the dungeon itself doesn't ask *too* much of the PCs.
I might amend Melendrin's description to reflect that centuries as a ghost has made him more amenable, but he isn't actually more reasonable or less childish. His willingness to help is purely self-serving and should still be role played as described, but your criticisms are valid. I'll update the file after the votes are in. I'm not sure I can make all the changes I'd like and keep it under 8 pages.
And thank you for the feedback. I generally consider criticism more valuable than praise (though praise is certainly welcome).