My wife and I stayed a Sokol's apartment for 4 nights. He'd also taken the time to arrange a taxi to and from the airport. We enjoyed our stay, the apartment was clean, comfortable, with the key standouts being a relatively new apartment building, location (6 mins walk to Athens market & up to 30 mins walk to most other key attractions), air conditioning (Athens does get quite hot, even at nights), large power shower, filtered water and not least, a roof top view of the city including the Acropolis which is breath taking.
The only minor issue would be the immediate neighbourhood, which, to be candid, is rough around the edges, but certainly isn't unsafe. It's worth putting this into perspective, if this residence were in a more affluent area then the nightly cost would have been considerably more. Sokol's place therefore offers excellent value and I have no hesitation in offering my recommendation to prospective travellers to book his place.