Construct a Cozy Built-in-Bed explains how to build a wood bed frame into a nook in your house or cabin. Plans are in the Image Gallery. (Click on the image to enlarge it.)

You can adjust the plans to meet your needs. The wooden bed doesn’t have to be built into a nook; it could be free-standing, including the bookcase end. Or you could shorten the end “walls” to make a more standard wood bed frame. If you choose this approach, you can use 2-by-4 lumber for the head and foot of the bed, instead of using 2-by-6 or 2-by-8 lumber.