My wife and I spent the night of December 27, 2013 at the Morgan Stewart Memorial Shelter.
It's a small, well built shelter that looks as if 6 would fit comfortably.
It was clean and in good repair as was the picnic table, privy, fire ring, and cooking grill.
Since we didn't need water, we didn't checkout the water pump.
Also, there's plenty of places to put up a tent behind the shelter.