The apartment is situated a few blocks away from many tourist neighbourhoods, and it doesn't feel safe to walk around without clutching bags extremely close and keeping your head on a constant swivel. While coming out of the metro lines, do not take the escalators, take the stairs. There are pickpockets who will push the emergency stop buttons and take advantage of the moments where everyone lurches forward on the escalator.
The apartment has numerous laminated signs with instructions of how to stay here "properly" (read, economically), including a map of the area making reference to where different ethnic groups of people are living. While there is a washer, you are instructed to wash only the towels and bath mat for the cleaner, not your own clothes. You are only provided with enough laundry detergent and fabric softener for this task.
The shower water is from a solar heater, so it takes a while to warm up, if at all. No matter where the faucet is turned, you will have ice cold water, then boiling hot, then back to ice cold. Seems as though I was always brushing my teeth with hot water.
If you are looking for a location near the Acropolis, this was a comfortable distance to walk. If you are only looking to stay in Athens for a short period and go to the ferry, perhaps staying in Piraeus would be much more relaxing, and less regulated.
The people downstairs who own the convenience store are friendly and welcoming.