Poseidonio in Piraeus scores 7.74/10 on HotelRoost, from a guest rating of 8.3/10 across 1,087 reviews (19 September 2026).
Rooms and what they cost
Where it is
37.9386, 23.6410 · map © OpenFreeMap, data © OpenStreetMap contributors
How this score was reached
| Guest rating as published | 8.3 |
| Reviews behind it | 1,087 |
| Country mean | 8.971 |
| After evidence weighting | 8.33 |
| Country re-basing weight | 0.3 |
| Roost Score | 7.74 |
Before you go to Piraeus
Travel eSIMData the moment you land, without hunting for a SIM card.Airport transferFixed-price pickup, booked before you fly.Car hireCompare local and international suppliers in one place.
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