Tuesday Morning there is Farmers and Bazar Market for many blocks, 6, around the building !!
I was told not to park only underneath the building late in the evening by message from host and I parked two blocks away where there were no signs warning and my car was blocked for the whole day by trucks for the market from 6am in the morning to after 17:00 in the evening!! I really needed to use my car and that's why I brought it to Athens paying expensive Ferry tickets. Had to use Taxis the whole day to go to long distances in Athens and it was very difficult for me. If you are there Monday evening to Tuesday morning you have to park your car at least six blocks away.