No - I have never been there. We originally listed holy wells from other sources in order to provide information on suitable sites for you to find and photograph. This well is described in Cheryl Straffon's excellent book "Fentynyow Kernow - in search of Cornwall's Holy Wells" She describes this one as being outside Padstow:
"Just outside the town there were 2 wells on the coast. St John's Well lay on the headland of Stepper Point 3.5 miles to the north of the town. It originally had a beacon chapel but all that now remains is a spring under a rock by the cliff."
Something is not right. This message is just to keep things from messing up down the road