Travel to Colorado Springs really has two options; fly directly to Colorado Springs, or fly to Denver and drive down to Colorado Springs. Be aware that driving from the Denver Airport to Colorado Springs takes around 1.5-2 hours. That being said, the whole state of Colorado is pretty car-dependent, so you will likely need to rent a car.
There are a lot of hotels in the Colorado Springs area, and nearly anything in the city is within a 30 minute drive. The closest hotels to the reception venue are the Embassy Suites by Hilton Colorado Springs, Best Western Plus Peak Vista Inn & Suites, Holiday Inn Express & Suites Colorado Springs, and Staybridge Suites Colorado Springs. All of the hotels are located on Commerce Center Drive.