Anyone who’s DM’d Curse of Strahd (CoS) knows that Castle Ravenloft is a BEAST. Not only is it a dangerous hellscape for your party of PCs, but it can be a nightmare for any DM to try and navigate this epic and confusing castle.
I was blessed (er…cursed) enough last November to run a weekend-long marathon Castle-Only campaign, and I needed a map that I could UNDERSTAND. Unfortunately, there was no such map, so I made one myself. I took the map illustrations in the book, and then added notes and color-coded arrows to show how one stairwell leads to another. It helped me SO much, and I hope it helps you too!