<p>OK- this is not supposed to be focused on anything related to what type of roommate you'll be, it's just a chance to show another side of you, correct?</p>
<p>Yes. Just use it as a way to show the adcoms another side of you that hasn't been presented anywhere else on your application-- or as a way to reinforce a side of you that HAS been presented somewhere in your application. I think there have been other posts related to this...</p>
<p>You could use it to show what type of roommate you will be, as long as it's not too shallow. If you do, don't just list characteristics like, "I am organized, but I like to stay up late," but instead focus on some revealing aspect.</p>