• No natural shade, and the umbrellas stay closed in strong wind, so pack hats and sunscreen
• No outside food or drinks: the on-site snack bar and restaurant cover lunch and snacks
• Main deck is first come: it takes no bookings, while cabanas and sunbed sets are booked online ahead (never same day) and close in winter

Lake Vouliagmeni is a small brackish lake under a sheer rock cliff, formed when a cave roof collapsed about 2,000 years ago. Warm seawater seeps in through flooded caves and mixes with a spring, so the water stays between 21°C and 29°C.

Kids swim straight off the main deck, where sunbeds and tables go first come, first served. Lifeguards are on duty, and there is no natural shade.