Humbug is one of our favorite campgrounds. We love the easy access to the beach and the beautiful hikes.  Showers are hot and free, rangers are always friendly.

Cell service is pretty iffy here, but we manage to make it work with the cell booster.

There's a dump station and water fill, trash and recycling, water spigots throughout campground, and firewood for sale.

Tent sites in Oregon don't currently have the 25% non-resident surcharge (though I've heard that's changing soon) and there are plenty of non-hookup/tent sites that will fit RVs. There are also FHU and pull through sites.