If your idea of a great vacation means being near the water, make a beeline for New Holland Island. No matter what you choose to do here, you're unlikely to get bored of those pretty views.
You'll need to make your way to Admiralteyskiy to reach this water-surrounded land mass. If you're eager for some sightseeing later on, why not check out State Hermitage Museum and Winter Palace? It's within reach of New Holland Island.