Do you mean the Bay CENTER KOA? We stayed there quite a number of years ago. CG at the time (1990) was a pretty basic KOA, but it had a nice little tunnel-trail to the beach. Saw our first banana slugs of our trip there (interesting creatures!) Nice enough, definitely off the beaten path.
Yes it is Bay Center. On my GPS I find it listed as Bay Center Road, South Bend.
It should be within driving distance of the Kite Festival in Longbeach during that week. Not many sites open then.
I have stayed there a few times and it is out of the way but definitely nice and quiet. They have rakes and pails that you can use for shellfishing if in season. Easy drive to anywhere you want to go in the Long Beach area.
CW3 Wood (U.S. Army almost retired)
Washington
2004 Cougar 244EFS