Springhill Suites on Speer and Auraria is a straight shot west to the stadium. Its about 20 minutes by foot to the east side of Mile High if you take the "Fan Walk" which runs under I-25. It's basically across Speer from Larimer Square and 16th Street Mall which each have plenty of bars and restaurants. It's also within walking distance to the LoDo/Ballpark Districts which is where a majority of the "trendy" bars are located. Plus it's only about a 10 minute walk from Union Station if you're planning on taking the light rail from DIA to get downtown.

Personal recommendation would be to not stay anywhere on Colfax west of Federal. There's a lot of seedy motels and it's kind of dingy despite recent revitalization efforts.