Blue Star Ferries runs a 17.30 ferry from Piraeus (the port of Athens) that sails out to The Lesser Cyclades at a leisurely pace. An adult ticket for the five hour journey to Naxos is just €27.5, but it can be very busy on board, particularly when Ryanair is offering cheap flights from Dublin to Athens. During the pandemic, boarding can be slow and there may be a lengthy wait for the ferry to actually leave the port. Still, on a sunny evening, you should be able to find an outside table at the stern of the ferry from where you can watch Piraeus shrink into the distance and the sun go down. Moreover, the catering on board is okay and reasonably priced, while the good humoured crew are tolerant of inebriated teenagers on tour.