The appartment is placed just outside of the center (20 min by foot to acropolis and center) but in a neighborhood where you do have to pay attention at night. One thing that should definitely have been mentioned is that you don't really have sunlight! There are windows but as the apartment is below groundlevel it's only indirect sunlight. The apartment is quite small but also cozy with a very comfortable bed. The bathroom has all the necessities but some mould on the ceiling, the kitchen is very rudimentary so we didn't cook and always ate out, the fridge is rather noisy. In conclusion the apartment has pretty great value as it's really not expensive and will give you a great time in Athens. If you're looking for something more comfortable it might not be the place for you.