I'm never sure how much attention unis pay to these traits and people's standards of clean vary wildly.
For example I'm quite a messy person but I like to keep the kitchen and bathroom clean and don't like to leave food waste and dirty plates lying around. However I do think someone who describes themselves as clean would struggle to live with me as I create clutter and I'm not tidy at all.
If you're living with other people you have to put up with different standards or take responsibility for cleaning certain things every time and not resent it. If you want full control over your living environment get a studio flat!