We spent a night here prior to hiking the Napali Coast. We went at a busy time, so there wasn't much "shady" homeless there as you will find at many Hawaii campgrounds. But I would be careful because there is a reputation at most campgrounds.

It has great shaded spots with beach views. Note that the beach is not really swimming friendly but there is a good snorkeling beach within walking distance.

Note you need to get a permit and the park is closed for a couple hours Monday and Tuesday morning for a few hours for maintenance.

I highly recommend doing the hike to Hanakapia Beach - it is part of the Napali Coast hike, but you do not need a permit to get to it. It gives you a little taste of the coast!