People very often mix Papafragas and Kapros, which is visible by the photos too.
Anyway, Papafragas beach looks stunning. It is a unique creation of nature and will leave you speechless.
The water is colourful and rock formation out of this world.
Contrary to "popular belief", it is NOT difficult to access the beach at all, even with closed eyes. When you start descending to the left, you will see that the path leading to the beach is broad enough, although you might get scared with vertical rocks all around. Just pay attention. Only the last few steps are narrow, but that is half meter above the ground, so no problem.
I just took a walk there, without swimming, so I can't comment on water.