Denver on the way!
Denver is a very nice place to visit, and my parents just went there a few months back. The place is also not very expensive if you see. You can go there on a tight budget and enjoy the place. The downtown area in Denver is very reasonable too, the tariffs for the downtown hotels are also very reasonable.
The guide i read about the tourist spots is also good and promoted the popular - visit Denver program by the government.
The Comfort Inn Downtown is one block away from one of the most visited places in Denver. The 16th Street mall is also one place where you must visit.
For more details check out the Denver guide which i will post for all here itself.