Fairmont is a great area if you are in to outdoor activities. In the summer, there is hiking, biking, fishing, water sports, golfing, white water rafting, etc. It's a fantastic area for sightseeing as well. Banff is less than 2 hours away and the drive across from Radion to Banff is one of the most scenic drives you could ever do. There is wildlife all over as well (deer, moose, eagles, +)
Fairmont is not so good if you are more in to shopping and fancy restaurants. Summer is peak time, particularly once the Calgary Stampede ends right through to Labour Day. THe units at Riverside, Hillside and Riverview are quite fancy, lots of brass and glass, and Hillside and Riverview are air conditioned. The Mountainside units are not as fancy, but they are large, roomy and have everything you need for a great vacation, plus a fantastic location on the mountain.
Send me a PM with any questions you might have.