I don't know if they're still a company or what, but I have a bed frame and mattress (and couch) from Koala. Has lasted a solid 5ish years now.

Bed frame has no bolts or screws, it just pieces together, and the mattress is still lovely to sleep on.

Disclaimer: I did spend a few years before getting the bed frame and mattress on a rotation of airbeds and swags, so take my recc with a grain of salt lol