Our Mountain House by Key to the Rockies properties range from studios to 2 plus loft condominiums and offer spacious interiors, fireplaces, balconies or patios. Guests can find amenities such as mountain views, an on-site indoor hot tub, on-site laundry facilities, free parking, full kitchens and WiFi. Mountain House Keystone is the original base of the mountain. All units are within 200 yards of the slopes and on the free shuttle route. Restaurants, shops and nightlife are within walking distance. Guests receive up to 20 percent savings on retail, restaurants, activities, and ground transportation, and 15 percent off ski and snowboard rentals. Minimum age required at check-in is 25. There is departure cleaning only. Check-in is 4pm and check-out is 10am. Minimum age required at check-in is 25. Office hours are 8am-5pm year round. Late departures are subject to half-day rates. Please call for more information. After hours lockbox is located to the left of the office front door. Please call 1-800-248-1942 to retrieve the code. Come to Keystone, Colorado, where winter and summer activities abound. Whether you like to ski, snowboard, golf, or horseback ride, Keystone is the perfect vacation spot.