I searched for a bed like this but didn’t find anything I liked that was well-built and affordable. So, I’m building this one out of solid wood for about $450. (Except I had to buy a new miter saw, because my old one was stolen out of my garage about two years ago, so that was another $250.)
Edit:
You’ll need the Measure It addon installed and enabled to see the dimensions. The gray boards are the blank stock pieces I bought. It’s in inches, because I’m a stupid American.
Here’s a screenshot of the blender file:

Edit 2:
I have most of the pieces cut to size. I’ve already made a small mistake, but it wouldn’t be my project if I didn’t. Nothing a little wood filler won’t fix. The side walls of the headboard with the angles I’ll need to cut with my circular saw. Or, maybe I could do it like this. I’m not sure my table saw is big enough. (Also, it was either woodworker or piano player for this guy, I think he made the right choice.)

Edit 3:
I’m stuck waiting for the Vevor pocket hole jig I ordered, and the bed rail hardware. I didn’t get the Kreg, because it’s plastic and more expensive than the more versatile Vevor jig.



The only potential improvement in this design is the placement of the legs. Adjusting them slightly inward would eliminate the risk of accidentally striking your toes. While this adjustment may require additional wood and support beams, not being able to strike your toe would be worth it!
This is a good point. This is a queen size replacing a king size, and the bed is in a corner, so the one exposed corner of the bed I might hit, is away from the corner I’ve been avoiding for years. So, I think I’ll be okay.