we loved our 2 day stay in this accommodation before we were bound to take a bus that would take us to Kefalonia. the location is close to the central busstation from where you can walk to the appartment or take a 5 min. busdrive (one of the reasons we stayed there was so that we could easily catch an early bus to Kefalonia). from the appartment you can walk to the centre in about 30 mins or there's also a bus stop a few minutes from the house.
the house has a stylish and timeless design and everything seems to have its place. the balcony is the main feature i would say, it seems even larger then the appartment and is nicely decorated with many green plants and there are two large awnings for shade and depending on the time of the day you can choose the best place to sit. the balcony also goes around the corner and from one of the 2 sides you can clearly see the Akropolis!
maybe some taller guests wouldnt like the shower and the toilet being together in a small room but for us it wasnt a problem at all. also the bed is not the largest so if you're tall, keep that in mind.
my last comment would be that there wasnt that much cuttlery and plates in the cupboards but other than that we had a great time exploring the local area and Athens' city centre.