Super fast demon slime

This is from the Goblin campaign. I think this is the best intro dungeon I've ever made. It all started with disappearance of Skorbutnik the gem cutter. Character backgrounds were generated quickly using ToAD. Sometimes a right tool really speeds things up!

I like to have things laid down as this. It gives me the most important info that I need at hand. Of course this involved much improvisation, but - hey, I like to improvise in my life. It's not cheating, it's giving your players more space to add in their detail, of course. And, of course, it depends on your current laziness .
I am certain that having one good table and/or a mind map that works for you is better than 1d4p detailed maps with extensive descriptions and fat crunch to eat away your focus while chewing through to important bits of information that Dungeon Master (and It's synonyms) really needs.

Maps are the skin of a game.

Tables and mind maps make muscles and bones and organs.

Focus on content!