To fully experience the natural beauty and laid-back pace of St. John in the U.S. Virgin Islands, a stay of 5 to 7 days is highly recommended. Because two-thirds of the island is protected as a National Park, the primary attractions are the pristine beaches and extensive hiking trails. A week-long trip allows you to spend several days beach-hopping along the North Shore—visiting icons like Trunk Bay and Maho Bay—while still leaving time for a boat charter to explore the surrounding cays or a day trip to the British Virgin Islands. It also provides enough buffer to explore the quieter "Coral Bay" side of the island and hike the Reef Bay Trail to see historic sugar mill ruins and petroglyphs. Staying for at least 5 days ensures you aren't rushed by the ferry logistics from St. Thomas and can truly sink into "island time," enjoying sunset dinners in Cruz Bay and morning snorkels before the midday crowds arrive via the safari taxis.