I don't think you can OWN the room of requirement unless you own Hogwarts as property-

That's why the title says "have" not "own"

It would be super cool to be able to visit the RoR though- just imagine filling it with all the books you want to read, plus a comfortable environment to read in

I don't want any tbh. Having any of them might get me in trouble or something. I like the way my life is right now

The RoR can literally give you anything except food.