The Keystone Lakeside Village features shops and restaurants and the Keystone Conference and Meeting Center and features a large lake as it's centerpiece.  The lake serves as a VERY large ice skating area in the winter with a lit ice hockey rink and lots of skating area with benches and even Christmas trees out on the lake.  The ice surface is even shaved with a Zamboni.  Local legend has it that the ice skating is open every season until the Zamboni falls through the ice (which is some time in late March usually). In the summer, the lake has kayaks, canoes and paddle boats.
The village also has restaurants and shops and a shuttle bus stop for the ride to River Run or Mountain House base areas (about 5 minutes).