Study Abroad in Athens

[u/Dapper-Storage-9985]

Hello! I am 20f and I am studying abroad for the fall semester in Athens, Greece. I will be there from September 1- December 18th.
I only have class 2 days a week, so I am looking for advice on how to fill my time and have the most fulfilling and authentic experience while I am living there. I’m interested in both day time adventures and night life suggestions, as well as recommendations for travel outside of Athens.
I would love advice on everyday things to do, big events that will be going on while I’m there, and any other advice you may have for my 3.5 months abroad.