Morning: Arrive at Athens International Airport and check into the centrally located Hotel Attalos (budget double room, free Wi‑Fi). Freshen up and enjoy a quick coffee at a nearby café.
Afternoon: Walk to the iconic Acropolis and marvel at the Parthenon.
Continue to the Acropolis Museum for a deeper dive into ancient Greek history.
Evening: Stroll through the lively Plaka district, dine on affordable souvlaki, and soak up the sunset from Lycabettus Hill (cable‑car ride). 
Morning: Take a budget intercity bus to Mycenae (≈1.5 h). Explore the Lion Gate, Treasury of Atreus, and the archaeological site.
Afternoon: Continue to the picturesque town of Nafplio. Check into the affordable Hotel Iason and wander the Palamidi Fortress for panoramic sea views. 
Evening: Enjoy a seaside dinner at a tavern in the Old Port, then relax with a walk along the waterfront promenade.
Find HotelsMorning: Head to Tolo Beach for crystal‑clear waters and sunbathing. Rent a beach chair and umbrella at a modest price.
Afternoon: Join a guided sea‑kayaking tour along the coast, paddling through hidden coves and spotting marine life. 
Evening: Return to Nafplio, explore the vibrant town square, and try local meze plates at a budget-friendly taverna.
Find HotelsMorning: Catch an early ferry from Piraeus to Santorini (≈5 h). Arrive and check into the budget‑friendly Hotel Katerina in Fira.
Afternoon: Explore the charming streets of Fira, visit the Archaeological Museum, and ride the local bus to the stunning viewpoint of Oia. 
Evening: Secure a spot at a cliff‑side café to watch the world‑famous **Santorini sunset** over the caldera, followed by a casual dinner of grilled fish.
Find HotelsMorning: Take a budget boat trip to the volcanic islands of Nea Kameni and Palea Kameni for a short hike and a dip in the hot springs.
Afternoon: Relax on the unique Red Beach, snap photos of its striking cliffs, and enjoy a light lunch at a beachfront snack bar.
Evening: Return to Fira, collect luggage, and catch the evening flight or ferry back to Athens for the onward journey to Pune.
Find HotelsTotal Estimated Cost: $530
If you want to extend the trip, add a day in Crete for its rugged gorges and budget-friendly beaches, or spend an extra night in Santorini to enjoy a sunrise cruise. To shorten the itinerary, skip the Mycenae stop and head straight from Athens to Santorini, using a low‑cost airline instead of the ferry, which saves both travel time and money.