An update to the thread I started.
I stayed at the Four Points Central in DUS. The Starwood Web site offered me a 75 Euro rate. I faxed the hotel and asked what rates were available. They faxed back and offered me a 52 Euro "Easter special" with breakfast buffet, VAT, and service included. I promptly accepted.
Upon arrival at about 8:00 in the morning, not only could we get in our room, but we had been upgraded to a one-bedroom suite. The hotel was great, the breakfast buffet was perfect (including smoked salmon, my favorite), and the lady working the front desk did a great job answering our questions about local transportation, etc. Many hotels would do well to have her as a concierge.
I highly recommend this property.