I am in London so don't want to go right to the end of Cornwall and would like somewhere suitable for older teens, young adults really, (16 -21) with train access so they can go on their own. I have been looking at Par Sands but would welcome thoughts from others who might know Cornwall better than I do as we were a Suffolk holiday family (Southwold) when they were younger and I always went to Wales as a child, hailing from the Midlands.