According to Google, there is a "free" laundry room for DVC villas/members in Jambo House on the 5th floor.
Perhaps someone can weigh in on whether you have to prove DVC membership to use them, or whether anyone staying in a villa (including those on rented points or paying out-of-pocket) has access. Apparently at the very least you need your MagicBand (or KTTW corollary) to get in.