I could not imagine a better location if i tried to see Athens. Perfect walking distance in a great safe area, we loved it.
Like most of Greece it is a bit of a hike to get to where to want to go and if you are carrying heavy suitcases you may want to make sure you have wheels on them for the 20+ steps up.
We were too exhausted to care but note there is no TV in the space. Not a big deal as we were able to watch movies on our laptop to unwind but it is something to be aware of.
Overall a great location and one I would be certain to book should I be in Athens again.