If you do put down info for a roommate, focus on how you use your space (prefer quiet, neat, early riser) and attributes that really matter (comfortable not talking, modest, etc.) That’s at least a recipe for a good roommate if not a good friend!
I know way more kids from BS who were housed with someone who became a close friend than I know who had tales of woe. (Not so with college, btw. )
But our school didn’t offer singles to freshmen or new sophomores, so maybe they were more invested in not creating problems they couldn’t solve?