We arrived in Athens Greece very early in the morning via a direct flight from Sofia Bulgaria. We took the Metro from the international airport into the city centre and it cost 10 euro per person for a one way trip. The entire trip took about 50 minutes. The hostel we stayed at was located in the Plaka neighbourhood, which is just below the acropolis. The walk from the metro to our hostel took about 15 minutes. It was about 10 am when we arrived at our hostel, but because it was low season we were able to check in right away.
The first thing we decided to do was wander around the Plaka on our way up to the top of the Acropolis. We decided to see the Acropolis first because the rain slowed down enough that we though it would be our only chance to see it. We chose a great time to visit the Acropolis because there were very few tourists braving the rain (and also it was winter time). Another bonus about it being winter was that the entrance to the Acropolis was just 10 euro .
Here is a link to the google map of our walking tour of Athens:
The Acropolis is actually a large grouping of buildings and structures that are perched up on the ancient Acropolis hill. We were unaware how extensive the site really was, and we easily spent a few hours wandering from structure to structure.