We were met at the apartment (excellent location!) by our host who spent a good hour not only explaining to us the details of the apt but also the environs...including the shortcut to the Acropolis, the local super market,
bakery and the local restaurants. Also local reliable taxis.
The apartment was very well outfitted and stocked with everything one could conceivably want at short notice including a bottle of wine chilling in the fridge. As frequent apartment renters, we found John Gregoriadis' apartment to be one of the best that we have stayed in so far in terms of location, proximity to public transport, friendliness of the neighbourhood.
All in all it was a very satisfying experience and we highly recommend this apartment for families upto 5 persons.