Last year the Sheraton Herndon Dulles could be had for $59 a night on many Thurs-Sun stays. I have not seen it that low so far this year, but I did see it at $69. Also, last year, the Aloft Dulles North was as low as $49. So far this year, I have seen it as low as $59. I use these properties a lot to get to Plat every year as the SPG properties inside of the beltway are seldom below $200. The Sheraton Reston and Westin Dulles are also good bets for low weekend rates. For bed runs, the Sheraton Dulles and the Westin Dulles are less than a mile apart.