If you'd like to add a little more culture to your escape, put Museum and Study Centre of Greek Theatre on your travel itinerary. Check if there are any guided tours or just wander around at your leisure.
You'll have sightseeing choices galore when visiting Athens City Centre. Museum and Study Centre of Greek Theatre is an ideal place to start here, but there are plenty of other worthy places to appreciate. Parthenon, Acropolis Museum, and Ancient Agora of Athens are near the museum and will fill in your day nicely.