Glyka nera ( sweet water ) it named in that way , because  under that beach there is always drinkable water. 

This an extra advantage for those they go there for camping. 

There are two ways to get there: 

1) Walking  about 45 min. from Loutro village.

2) By boat witch leaves Loutro village every morning at  10:55  to sweet water and returns back to Loutro village at 16:45.

 Sweetwater beach I
A small world has gathered here on pebbles along the water that hesitantly flows along shores, this world sails on a small red boat to a narrow spot under horrifying rocks people drink from the earth here and their nature continually mingles silently with the sweet surprise from the earth.
Only the whispering Libyan desert wind creates a brief moment of confusion as in shade less paradise bewildered naked people chase flying parasols and nothing ever changes unless we leave this life here for good.

  Sweetwater beach II
Do not ask the mountains who live here do not ask them whom they chase from this Grecian paradise
of round, small pebbles. Modern first men on this sweet earth carefully store forbidden apples out of fear: melon and grapes are secretly permitted but he who drinks rum these wells
Wishes to stay until he must leave.
So slowly do the short days pass in their ancient Grecian rhythm and on either side the eternal rocks, the almost emerald sea guard the naked people rotating Like sunshades waiting for the muttering ship to arrive at half past five.
Arjen Boswijk August 1994