I may be not an expert in Athens apartments, 'cause this was my first rental in Greece. However, this seems to be an excellent rental from various points of view.
1. The apartment itself is big for a 2-bedroom flat, as it has an enormous living room combined with kitchen with 2 sofas available. The most important thing about it is that it's really very functional. The kitchen is well equipped. There are 2 balconies, and the entrance to each of them is possible both from the living room & from one of the bedrooms. The second shower is not in the bathroom, but in one of the bedrooms. There is automated central heating that works during several evening hours - but one may use air conditioners for heating if needed.
2. The hosts are friendly, and the communication is easy & efficient. After the 1st day I sent a message to Jim, asking about the electric kettle (Greece seem to be a 'coffee country', not a tea one - so there are 2 coffee machines of dufferent kinds in the apartment, but there were no kettle). He was there with a new one next afternoon. Amazing! Now you know there's even more that really a long list stated in the apartment description...
3. The location is very special. It turned out to be so, as we walked around several central areas of Athens, we saw a plenty of historical & picturesque buildings in Plaka or around Monastiraki, but the areas pitifully seemed not that safe and free of beggars & street traders, as we could wish. But this was true about the area the apartment is in! This doesn't look like a residential one with plemty of people around, nor like a tourist trap. It's a mixed-use functional area where the locals are active. So, there's a big supermarket in 500 m and a small OK-market open every day until 11 p.m. in 600 m. The metro station Acropolis is in 500 m also, the Zeus temple is even closer. One enters Plaka on foot after 600 m walking. We've walked to Monastiraki several times, both through Plaka & around the Acropolis hill along the pedestrian road, though my younger child is not yet 4 years old. It's 1.5-2 km one way with a plenty of sights as you go. It's a good starting point if you go to the sea coast, as there's a tram stop in 200 m from the apartment.
So, this is surely a good deal & the excellent choice, great value for money; central but quiet, comfortable & functional. If we happen to be again in Athens, we'll never search for anything else.