Nansidwell Beach (also known as Woodlands)
Between Maenporth and Mawnan Smith there is a footpath that leads down through some beautiful wooded areas and ends at the little beach of Nansidwell, part of an area looked after by the National Trust.
Mixture of sand with some shingle interspersed with rocks. A five to ten minute walk. Maybe longer on the way back if you have children, but don't try taking a pushchair!