As always, better bidding helped me grab a deal. My research showed that Denver 4*'s were pretty booked for the weekend of 7/7-7/10. I started at $60, increasing in $3-$5 increments and adding non-4* areas to allow additional bids. After about 4 tries, confirmed the 4* Renaissance Boulder Suites for $74/night for 3 nights. Thanks everyone for all the info posted.