You can try HOTWIRE...they have a 3* coming up for $199 at MTS which matches for Murray Hill East Suite. Prices change periodically, I would monitor it for a week to see how it fluctuates based on 9/13-9/20.
For 5/28-6/1/08 3* Disneyland South Smoke Free Pool High Speed Comp Breakfast Laundry $49.00 Note: There will be a resort fee about $10.00 The resort fee threw me off... Any guess?