I stayed in Danae's & Sotos lovely studio for more than a week during my New Year holidays. The studio is on ground floor and conveniently located nearby Syngrou-Fix station with only 10 minuts walk from Acropolis. Appartment is decorated very nicely with pictures drown by Sotos himself and has absolutely everything you may need, including dish washer and washing mashine. Danae and Sotos wrote detailed house guide, which was very helpful for me. The neighborhood is safe to walk during the night and I found 2 shops nearby where you can by some food.
The only incivenience for me was that the house has old central heating system. It works twice a day only and is not good enough to warm up the studio. There is airconditioner inside the appartment, but you should be aware that it does not heat directly to comfortable tempreture and for electricity a door key is required, so it does not work when you are out.