I really loved this place! Firstly, Nikos was a very good host -- very friendly and always helpful. He explained perfectly the directions of the apartment, always making sure that I got it right. He also showed me the region that the studio was in.
Talking about the location, this is the best that you can get! The house is near everything you need to see in Athens -- just by the Acropolis and Museums. I strongly recommend this place and if I come back to Athens I would stay there for sure!
Great place!