My wife and I stayed at the Baymont Inn because we had a very early flight out of Denver, and we wanted to beat the snow that was expected. There was tons of parking, which was really nice, and the rooms were great for what we needed. Obviously, this is not a destination hotel, because there is nothing near DIA. We were able to leave our car at the hotel, have a nice free breakfast, and catch the free shuttle to DIA the morning of our flight. When we got back, we called to be picked up and by the time we got our bags and made it to the shuttle area, the van was ready.
If you are looking for a relatively inexpensive place to spend the night close to DIA, you really can't go wrong with the Baymont Inn. Will definitely be staying here again.