You will build up a thirst just getting here (unless via private yacht). This bar is on a rocky headland at the far east end of the main beach, you have to clamber over rocks or climb down steep steps from Portals Nous town. With a terrace located right at edge of the sea, the views are blissful, especially at sunset.
They also serve reasonable food (as in price and quality). Note that this bar is not recommended for young children due to the sheer drop to the sea from the terrace.