From set 298, “Nursery” from 1978:
Even though this bed is scaled for a child maxifigure, it doesn’t look too out of proportion for a mini-figure, unless you try to squish it in a house ;-).
You need two 6×10 plates, lots of 1×1 bricks, 2×3 and 1×2 roof bricks, and misc 1xN bricks that could be substituted with whatever you have on hand. Oh, and a couple 1×4 flat bricks for the ladder.
Bunkbed Instructions 8.5 x 11 PDF
Austin really liked the idea of using roof tiles as pillows and we’ve been doing that a lot lately after making this.
Tomorrow I’ll show you modifications we made to make it fit the minifigure scale slightly better.