I’ve stayed at Rainbow’s End twice. Both times were in their overflow camping area, which are two spots with water and electric only, under some trees which made for comfortable shade. The staff at the park are nice and professional, the facilities are always clean, and there is a large dog park (it has a somewhat short fence, perfect for my small dogs but be careful with bigger animals). Lots of people live at Rainbow’s end full time. It’s very clean and well maintained. You do get some road noise from the US 101, but it’s not too noticeable. If you aren’t taking advantage of water and electric hookups, it could be a little expensive.