My girlfriend and I had a fantastic stay at Grey Matter's place (Grey Matter 2). The flat is a 5-minute walk away from the Acropolis and there are lots of shops and restaurants around the corner. Everything inside looks brand new and is of good quality. We got complementary coffee and wine, which was very much appreciated. There is not much space inside the flat; in particular, the shower is very small, but it is great value for money. I very much recommend Grey Matter 2!