If your idea of a good vacation means being by the water, make a beeline for Islas Ballestas. Whatever you choose to do here, you're unlikely to get bored of those pretty views.
Islas Ballestas is often on the itineraries of travelers to Pisco. But this water-surrounded land mass shouldn't be your only stopover around this part of town. Pisco Plaza de Armas is nearby and worth a look.