Is it free to camp there
Yes
Yes, each of the six campgrounds has it's own bathhouse (they are numbered and in the center of each area. There are slight differences for each campground (skylight, benches, number of stalls) but each has a male/female side with toilets, showers, and a slop sink for doing dishes. The bathrooms are clean, but the water may not always be very warm depending on the time you shower and be sure to bring your own shower supplies!
Yes. It's free to use. FYI the water is warm not hot but still refreshing
Yes and their showers are very clean.
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