The flat is roomy and comfortable. It has everything you need and the lovely terrace with all its plants was a great place to have a breakfast in the sun before the start of a busy day!
Travelling on my own, I was wondering about safety in Omonia but, while not as picturesque as Plaka, and provided you observe the usual prudence as fit in big cities, it's fine and very well connected. You can walk to most of the main attractions of the city and if not, cabs are rather cheap.
Stelios responds very quickly and look after you as much as possible to make the stay pleasant.
All in all, it was a very nice Trip!