I am sorry, but I cannot recommend this place.
The flat could be much cleaner, especially the kitchen, which was really greasy. I sent Christos some pictures and he came and tried to clean it himself without much success. The day after he brought a brand-new pan.
On the other hand, as the apartment is very old and the balcony doors and the windows do not close properly, you can hear drunk people shouting, and loud parties which run on until the early hours of the morning, also vandals burned trash containers twice in the middle of the night. Exharchia is a remarkably interesting neighbourhood to visit during the day or a nice spot with good restaurants to dine in the evening, but you can hardly rest at night.