A block of rooms has been reserved at the Springhill Suites by Marriott (direct link to conference rate), located directly on the Auraria campus of the University of Colorado Denver, at a cost of $239 per night. If you wish to call rather than book online, please call the Reservations Department at 877-249-9279 x 2800 and identify yourself as part of the LASSO Conference (special rate available until September 5th).
Springhill Suites Denver Downtown provides valet parking for all vehicles, managed by ProPark. Self-parking is not available. There is a parking charge of $40.00 for overnight parking, and $20 for 0-8 hours.
On-campus parking is available for less, with more information available here.