During my stay of 3 nights I enjoyed its nice, clean and quiet back room, great king-size bed, gym and sauna for free as well as my own jacuzzi into my bathroom (deluxe room).
The staff was great and mostly kind and helpful, even printed for free my air tickets.
The negative part is that alittle attention is needed when outside, especially during the night but it is located really close to any means of transport as well as the most worthy monuments in Athens.

Fantastic customer service, comfortable, we were able to walk to main attractions , excellent view from the terrace if the hotel

It was imperative that our 7 day stay in Athens was in a 5 star property as we were travelling with my older parents and wanted them to be comfortable, safe and happy. They were impressed by the service, rooms, breakfast buffet, facilities and courteous and attentive staff. Reception was busy most mornings catering to checking in and checking out customers and large tour groups mostly from Spain - which was not an issue. The large lounge area next to reception is often occupied by people on laptops researching this and that (us inlcuded) so it would be much nicer if the bar/coffee shop was open for refreshments. We cannot fault the staff and take our hat off to the Manager who upon our return visit remembered us and offered us an upgrade. The gym is small but well equiped, however we did not have an opportunity to try the hamam. The hotel is in the centre of the city and very convenient to the metro and shops. We noticed police patrols and buses in the area on a few occassions. Although we did often go out at night and walked back on a number of occasions I would not recommend this if you are travelling alone. Athens is a very different city to the one I remember 7 years ago and the changes will obviously continue for quite some time.

they have fantastic customer service!
They were attentive, helpful, quick, responsive, and polite, at all times.

its in the center of athens ..'
but very dangerous at night only by car or taxi you go out to athens