Vieques BioBay Bed and Breakfast

Lined along the rural stretch of PR-201 on Vieques island, this bed and breakfast sits roughly two kilometres from Mosquito Bay — one of the world's brightest bioluminescent lagoons, where kayakers disturb plankton that glow electric blue after dark.

Vieques operates at a slower register than mainland Puerto Rico: no casinos, no cruise ships, and a horse population that rivals the human one. The property's small scale — reflected in its four reviews averaging a near-perfect 9.7 — suggests a genuinely personal operation rather than a managed guesthouse chain.

Sun Bay public beach lies a short drive east, and the former US Navy land now managed as a wildlife refuge covers the island's eastern third, offering undeveloped trails and empty coastline rarely found this close to the US mainland.