I have had a wonderful stay at Rena's place. The place is sparkling clean, spacious and with many thoughtful touches. The neighbourhood is also very nice. It's not that touristic, so it's much quieter. However, it's close to the metro and there are many good options of restaurants and bars around.
The host Rena was very helpful and generous in giving me tips in Athens. I hope next time if I am in Athens, I can stay at her place again!