If you want a central location within walking distance of all the sites and just metres away from the metro if you want to head a bit further, then this is a great space. It is best for one but the pull-out bed also means a couple could make it a base for exploring the city.
I enjoyed working at the desk and being able to gaze across to the Parthenon. On pleasant days there is a large terrace which would be lovely for evenings.
The apartment is on the sixth floor with the lift taking you to the 4th ... but don't let that put you off. The stairs are wide and easy to manage.
The best recommendation I can offer is that I hope to stay there again when I am next back in the city.