Petasos Beach Resort & Spa in Mykonos - A luxurious boutique hotel ideally situated on the Greek Island. One of the best hotels in Mykonos, Petasos Beach Resort stands on its own private peninsula. This hotel is part of the Small Luxury Hotels of the World. Ideally situated between Platis Yialos and Psarou Beach in Mykonos Island. With my fellow travel companion, luxury blogger, and longtime friend, Stephanie Olivier, we had the pleasure of discovering one of the coolest hotels in Mykonos together.