Great place. Very few people on Monday night. There is currently (June 2019) a boil order for the tap water, so be prepared for that. There isn't firewood for sale at the park, but there is in the town a few miles away.
The hike to the waterfall is as others have said, mostly easy with a steep section, but my 4 and 7 year olds and my out of shape self managed just fine. The trail head is at the very end of the Cold Water Loop.
There was a moose in our camp site when we woke up.