After a lot of research on this site, and debating between HOTWIRE and PRICELINE, we finally decided to go with Priceline. While there is no 4* property listed on the hotel list here, that was an option on Priceline. We bid $55 (with a warning that it had little chance of being accepted), and sure enough, it was rejected. We dropped our bid to $50, but added the 3.5* level. The Hyatt Regency accepted this bid; total price with taxes and fees was $64.26. We submitted an identical bid for Feb. 13-14, which also was accepted by the Hyatt Regency (Crystal City) ... that's listed separately. We are using Reagan National Airport as a jumping-off point for a trip to the Caribbean, and the Hyatt has been very accommodating. They are allowing us to store several bags at the hotel (for free) for a week, and of course the courtesy shuttle is a nice amenity, too. Looks like standard rooms on the Hyatt site are going for $92 (shockingly low, I think), but we still saved almost 50% by checking here first. Thanks again! Oh, and we definitely used the PRICELINE link from BetterBidding.