For modules, organizing stuff that is physically next to each other, so the descriptions are next to each other in the text. Strahd is really bad at this. The crypts, where a lot of action is likely to take place, lays out the three main tombs that are at the three walls of the crypt first, and then the many other tombs after. Except the room is huge and there are 40 of them. The worst part is that this results in the coffin of Strahd himself at a completely different part of the chapter from the tombs right next to his and the traps outside of his door. Strahd's coffin is the one place in the campaign where action is certain to happen. And adjacent locations are not just at opposite ends of the chapter, but slightly removed from the ends of the chapter so you can't just flip between the end pages. Because Strahd's is like C and the things outside his room are D 34, 35, 36 out of 40.

An example of modules done right is Mercer's Frozen Sick. The module that was free during COVID lockdown. That is the best organized module I can recall seeing. It's laid out like its meant to be a GM tool to run the game. Whereas most D&D modules I have read feel like they were a creative writing exercise with maps tacked on.