Vacation Rental for August 2015

We are 8 people (family) looking to connect in Sylvan Lake this summer for a 70th birthday celebration. We need a furnished house or 2 cabins with 2 bedrooms each. We don't mind cabins at RV campgrounds. Can anyone advise us if there is such a thing within a 15 minute drive of Sylvan Lake in a quieter area? We have two kids with us ages 10 and 14 so need things for them to do as well. thanks for any suggestions.