Kay was very helpful and flexible during checkin. I had messed up and booked our stay a day later than I though I had, so I miscommunicated the arrival time! But she was very cool about it, and even tried to help us find another place to stay that night. It all worked out, and we had a great time in Athens.
The space itself is very clean, spacious, and stylish. Also, there are 3 separate air conditioners in 3 separate rooms, which can be closed off from one another. So if you have 3 people who all want it a different temperature, they can be accommodated. :)
The apartment is not within the touristy areas (about a 30 minute walk to them), but the cab right is only ~$5 for a 4-person family, and if you use the Beat app, they're there in about 5 minutes.