Lovely public swimming pool, which I would prefer to swim in than the sea in Salir do Porto. However you can always follow the boardwalk to Sao Martinho do Porto for a swim in the beautiful bay and come back to Salir do Porto to stay in the evening as it is not so 'touristy'.
A good choice of Shops, cafe's, restaurants and beautiful country walks.
Would be best to have your own transport, unless you don't mind a lot of walking. The area is quite hilly.