It’s very clean, is what it is. And looks solid, and sturdy. Both are absolute minimums for a place like this, for me.

Once that accumulates detritus, cobwebs, the remains of centipedes and other bugs, it becomes very not a nice place to be. If those supporting beams looked sketchy, hard no.

That’s just me, though, not OP. And I have no idea what its purpose is, although it looks like some sort of business crawl space or access area.