Horse-drawn carriages are a romantic, but expensive, alternative.
The majestic Mexis Mansion in the town centre, which once belonged to the island's first governor, Hadziyiannis Mexis, is home to the Museum of Spetses.
The small, scenic, pine-clad island of Spetses has an exclusive feel, perhaps because of its affluent residents.
Cars are banned, so a scooter or comfortable walking shoes are required in order to explore the charming courtyards and grand neo-classical mansions of the port capital Spetses Town.
In Agia Marina, the Hotel Apollon (2, doubles with breakfast €82-€92) offers panoramic views of the Argosaronic from its cliff-side location.
In Perdika, Hotel Hippocampus (2, doubles €45-€60) is traditional and cosy.
Hydra is twice the size of neighbouring Spetses but has an even smaller population of around 3,000.
The biggest island of the Argosaronic, measuring 85 square kilometres (33 square miles) and with a population of 10,000, Aegina is centered around a pleasantly bustling town full of tavernas and cafés overlooking the main harbour.The best spots for a swim are Marathona or Aeginitsa on the west coast, and Kleidi and Keri near the southern village of Perdika – an ideal place for a seaside lunch.In Aegina town, the Aegenitiko Archontiko (2, doubles €70) is traditional and friendly, while Hotel Areti (2, doubles €50-€60) offers sea views.These four islands – the cosmopolitan Spetses (two hours by hydrofoil), picture-perfect Hydra (90 minutes), pine-clad Poros (one hour) and pleasantly bustling Aegina (40 minutes) – all make invigorating day trips or relaxing weekend breaks.If you do them as a quick side trip from Athens, it makes sense to take a fast boat or hydrofoil rather than the regular ferry: journey times are halved.
If you're visiting Athens and feel like an island break but only have one or two days to spare, the Argosaronic offers the perfect opportunity for a rejuvenating getaway.