We enjoyed renting a cabin with the family at several different times.  

The mountain bike trails are so rugged and fun, difficult for biking.  You can hike them too, and they offer nice views of the lake.

The area seems to have a skunk issue at times, and it can get smelly near the cabins.

The cabins have nice fire pits and kitchens have enough space and facilities to make a nice family dinner.

The lake is large enough to boat on and you can do paddling sports there easily. 

The park has tennis courts and lots of other recreation: boating, hiking, swimming, biking.