I generally prefer dungeons that make sense. For example, when I build dungeons, I often look up old blueprints of castles or mansions and base the dungeon's layout off of them; none of this "labyrinth" nonsense where corridors and room placement makes no sense. It also helps when determining the ecology of dungeon; where is the kitchen, food storage, and commodes (all potential sources of food for its denizens), where are the bedrooms (smaller nests for vermin) and living spaces (dens for larger predators), what walls have structural damage or where are the balconies/outer doors (how did the dungeon's habitants come to reside there).
