A couple of additional options to consider for the tournament this year.
Best Western Plus Gateway Inn & Suites http://book.bestwestern.com/bestwestern/productInfo.do?propertyCode=06161&cm_mmc=GooglePlaces-_-BW-_-CO-_-06161 can offer discounted rooms at a rate of $129.00 dollars including breakfast.
Kyle, the General Manager has set it up so that teams can call 720-748-4800, and mention that they are with the Rocky Mountain Rugby Challenge, and his staff have been instructed to provide the discount.
DoubleTree by Hilton Hotel Denver - Aurora http://www.denveraurora.doubletree.com has been contacted by a couple of teams already, and they might accept additional rooms through their normal reservation system. Unfortunately, they are not able to offer an additional discount.