Our stay in Athens was a comfortable one. We didn't book until the week before but Chris was very responsive in answering questions and he sent a PDF guide which contained the unit location and things to do - which was super helpful! This unit is on the 7th floor (roof) of an office building but felt safe and was REALLY EASY to get to by the metro. Also within reasonable walking distance or metro rides to the major sites.
The outdoor terrace gave us a wonderful respite from the busy city streets and also has a great view of the Acropolis! Definitely spend more time outside when you come to this unit.
The bathroom was quite nice with strong water pressure and well stocked with soaps, shampoos and suntan lotion - much appreciated. There is also a little kitchen and fridge if you want to cook for yourself. Overall, a great experience and tremendous value for the price!