Chris Child: Opens at 1am - take a boat out to Carpe Diem's private island night club. You can also go check it out during the day for cheaper via a water taxi.
Chris Child: Perfect place for a carafe of wine and a relaxing afternoon. You can only really get here by boat (yours or a water taxi) - there's a hike but it's long.
Pero Markunović: Great island near Old Town of Dubrovnik. Perfect for relaxation and swimming. Boat leaves every half and full hour from old harbour and it costs 60 kuna for return ticket.