Extended stay

We are looking for an RV park where we can leave our 30' Class A motor home, for 4-5 months during late spring, summer, and early fall. Our ideal location would be in the Bandon Oregon area, SW Oregon near the coast. We live in N Western Montana, and would like to use our RV as a cottage and avoid having to travel back and forth every time we want to get away from home. Suggestions for parks or sites anyplace near the coastal roads of northern cA, All of Oregon, and SW Washington would also be welcomed.

Joe