very evocative setting, great layout that is very clear. Very nice maps and descriptions and characters, all of it.
Maybe I missed it but I couldn’t see a reason why a party of adventurers would want to be in such a horrible and plague-ridden place, even if they are invited for dinner. I think the DM will have to give some good motivational hooks for the players.
This is a really high quality adventure and I’d like to run it myself.