My girlfriend and I stayed at Anna’s place for a month. Anna is incredibly helpful and communicative. The one time l locked myself out of the apartment she was right there to let me back inside in a very short time. Location is great—though a tad far from metro (15-20 minute walk), you get used to it—but the neighborhood has everything nearby (supermarket right around the corner, great bakery, etc) and it is relatively quiet at night (especially for a city). The place is really clean and nicely arranged.
The one negative is that the wifi is not the fastest and the range is limited (doesn’t reach the bedroom most of the time) since the router isn’t located in the apartment itself.
But if top-tier wifi isn’t a priority, it is an amazing place to have as home base in Athens, walkable within a half hour to many areas. Would recommend and stay again anytime I’m back in Athens!