Argyris is a great host and very patient with my changes of arrival time due to plane delays. The location is great - a few minutes walk to Kolonaki Square, a few more to Syntagma and very close to supermarkets, best shopping area and restaurants/bars. My only caveats are a/the flat is on the ground floor of a small street, but cars and motor-bikes do go by so it was a bit noisy though I was out a lot so it didn't really matter b/the house is high up underneath Lykabettou St so to walk up back from central Athens there is a steep climb. So not for anyone with mobility issues for sure.
Otherwise very good value for money, clean, nicely decorated, the bedroom well-equipped with closet & hangers & an iron, WiFi and a/c all worked very well.