Train
The A Line runs every 15 minutes (save for late late nights) from the Denver airport to Union Station downtown. It is a great way to get to and from the airport and city. Tickets run $10 a person, and it's about a 35 minute ride. It can save you the time, stress, and expensive of ride share from DEN.
Hotel
This hostel seems to run about $55 a night per person, and is roughly 7 blocks from the venue
Hotel
This hostel seems to run from $60-90 a night and has options for 4, 6, 8, and 12-person dorms. It is next to the art museums of downtown Denver, but would likely need bus or car transport to the venue.
Hotel
Seems to run a little under $200 a night; about 4 blocks from the venue!
Hotel
About $175 a night; a little farther from the venue but an easy commute in - especially when utilizing the free mall ride on 16th Street.