How should a first-time Greece trip be structured?
For most first trips, spend two or three nights in Athens and five or six nights on one island. With two weeks, add a second island that connects directly. Choose Crete as the main trip when you want beaches, food, villages and road travel in one large island.
Full answer
A first trip to Greece does not need to include several islands.
Athens and one island make a complete holiday. The city provides the Acropolis, museums, neighbourhoods and evenings that feel very different from island life. The island then has enough time for beaches, villages and days that are not organised around a ferry departure.
Begin in Athens
Spend two or three nights in Athens.
The Acropolis is best visited early or later in the day, particularly in summer. Keep time for the Acropolis Museum, the Ancient Agora or another site, but do not turn the city into a list of ruins.
Walk through Plaka when it is quiet, eat in a neighbourhood beyond the busiest tourist streets and see the Acropolis lit above the city at night. Athens can be hot and noisy, but it deserves more than an arrival night before the ferry.
Choose one island for a short trip
With a week or ten days, choose one island.
Naxos suits most first visitors. It has a pleasant main town, long beaches and inland villages, and there is enough to do for a week without another ferry.
Santorini suits travellers who specifically want the caldera, cliff villages and a short romantic stay. The beaches are not its main strength, and prices and crowds are high.
Paros suits couples and friends who want attractive towns, beaches and lively evenings.
Milos suits travellers who want swimming, boat trips and a coast shaped by volcanic rock.
Mykonos suits travellers who actively want nightlife, luxury and beach clubs. It is not the automatic first choice simply because it is famous.
With two weeks
Add a second island only when the ferry connection is direct and the islands offer different days.
Santorini and Naxos work well: the first for the caldera, the second for beaches and villages. Paros and Naxos are close and easy to combine. Santorini and Milos can work when the seasonal ferry runs on useful days.
Spend at least four nights on each island. Three nights can be enough for Santorini, but larger islands need more time.
Consider Crete as its own trip
Crete is not another quick island stop.
Chania, Rethymno, Heraklion, mountain villages and the southern coast are spread across a large island. A week is enough for one part of Crete. Ten days or two weeks allow a road trip through two or three areas.
Choose Crete when food, history, beaches and inland travel matter more than seeing several Cycladic islands.
Mainland Greece
Mainland Greece is a strong first trip for travellers interested in ancient sites, mountains and road travel.
Athens, Delphi and Meteora can be combined in a week. The Peloponnese can fill ten days with Nafplio, Mycenae, Epidaurus, Monemvasia and smaller coastal towns.
This route requires more driving but avoids ferry schedules and gives a very different view of Greece.
What to leave out
Leave out the third island when it adds another checkout and ferry for only two full days. Leave out Mykonos when nightlife and luxury are not priorities. Leave out Crete as a three-night addition to Athens and the Cyclades.
A good Greece trip is not measured by the number of ferry tickets.