Aegina is the "next door" island since it is so close to Athens. It is suitable for its organized beaches where one sits until the sun sets. The country of this island is what will make you have Aegina for the first summer destination for your next years. You'll spend your evenings drinking raki with your friends. The main carriage through is the car that you will need to get around. It would be a good excursion to the Monastery with your boat within 15 minutes to see the peacocks and crickets