This place is amazing. It is close to the Acropolis (walkable in 15-20mins) with a lot of nice eateries. There is a supermarket less than 5mins away, and the metro for line 3 (direct to the airport) is just a 7min walk away.
The unit itself is small and cozy, which is just nice for 2 people. Very nice balcony with a fantastic view of the Acropolis at night. The bathroom was a little small but it was alright for us. The shower has good water pressure and hot water.
The host Nikos was very responsive, responsible and accommodating. We had a bit of trouble with the door and he didn't hesitate to show up and help us sort out the problem. There is also a "survival guide" that he prepared. Very handy for first timers getting around Athens