This seems to me like a pretty clear case where leisure=bathing_place should not be added (because no particular point is more suitable for bathing than any other), or possibly by mapping it as a way coincident with the shore/coastline.
The type of place I think @osmuser63783 refers to is something like the following, where while the beach is a long one (even if not as long as your example) most people are concentrated at/around the text “Rullsand”, where all the paths go to. In such a case there is a spot that can be roughly represented by a single node that is more commonly used as a bathing place.