Lovely little place in a quiet residential area, within walking distance of central Athens and all sights (ca. 15 mins walk to Monastiraki square). For a solo female traveller, both the area and the building felt very safe day and night.
The flat is very clean and nicely decorated with a 50s retro feel to it. It has everything you will need for your stay, good speed internet (video conferencing no problem), fully equipped kitchen (no dishwasher, but the marble sink makes up for it), bath with new and easy to use washing machine, and a comfy double bed. It is pleasantly cool even in hot weather, I stayed in June and did not need to use the air con once.
Nikos is a very friendly and helpful host who manages the place remotely, he arranged an airport transfer for me when I arrived late at night (the driver conveniently also had the keys for the flat), as well as an early morning taxi when I left. He provides detailed written instructions for the flat, do make sure you read *all* of them when you arrive before you end up having a cold shower like I did. :-) All in all a great stay at this price, would definitely book again.