We had a lovely 6 night stay in Nikos' spacious apartment in September. Nikos was very easy to communicate with and went above and beyond to accommodate our requests. The apartment is very easy to find, just on the southern slopes of the Acropolis. Check in (via key pad, as we had requested) was incredibly easy.
The apartment was very recently refurbished, so everything was spotlessly clean and very tastefully decorated. It has everything you could need. The outside space in particular (there is a balcony AND a roof terrace) is outstanding, with incredible views of the Parthenon. The views can also be enjoyed from the very comfortable double bed. Waking up to the view was incredibly special, and something I won't forget.
We had a really wonderful stay and would thoroughly recommend this place.