To peel the peaches, plunge them into boiling water for 2 to 3 minutes. remove and remove peel; cut peaches in half
Bring water, sugar, vanilla and lemon slices to a boil. Add the peaches and simmer until tender. Remove the vanilla bean from the syrup and reduce the syrup by a third.
Pit the peaches and cut them in quarters. Set them in a bowl, add the grapes and cranberries and pour hot vanilla syrup over them; chill until ready to eat. Eat as is chilled or as a topping for frozen yogurt or pound cake