The flat is amazing. Stylish, sparkling clean, full of light. It is only 8 minutes by foot from the metro station and 25 minutes from the city center. I would totally recommend if you are planning to stay only few days and/or planning to always take a taxi.
Although we really liked the apartment, we still had two big issues. First of all, you always need to preheat water before you use shower or want to do the dishes. Sometimes it was a big problem as we had to wait 30-40 minutes. The second issue is the biggest, but not Andreas's fault. The area where his apartment is located is full of migrants and is very dirty. We never felt safe in there and my wife never walked alone as she was always approached by muslim men. At night we always took taxi because it felt very dangerous. You know, we traveled over 40 countries and never felt that insecure and unsafe.
Please, mind that if you like walking by foot ! Besides being full of scary migrants from Middle East and Africa, streets are very dirty and smell like a garbage + toilet. We lived there for month and still to the last day we never enjoyed our walk home.
Taxi was the best solution, it takes 10 minutes and 4 euro to get Omonia, where the city center starts.
I can totally understand that we made a bad research and should have checked information about that area before we booked a house there. I just hope our review might be found helpful.
Anyway, the apartment by itself is gorgeous. Amazing view, beautiful design and good furniture. And Andreas was very helpful whenever we needed his advice or help.