Heppner,Oregon RV camp site recommenations please.

Trying to find a quite out of the way RV campground and wondering if around Heppner,Oregon has anything you would recommend? I have a 34 ft. 5th wheel with a total length 50 foot when connected to the Ford 350. Would like hookup if possible.

Anyone stayed around Heppner for example, Anson Wright Park and or Cutsforth Park? Planing a mid September trip for 4 to 5 nights and would like your recommendations and comments.