You couldn't ask for a better place to stay at in Athens. It is located in the best neighborhood in Athens. Kolonaki offers a lot of excellent restaurants and shops. They are definitely more expensive, but well worth the money. From the apartment it isn't too far to the top of Lykabettos.
The apartment was lovely. It was clean, had great AC (very important in July) and a big balcony to enjoy the sun and quietness. The amenities for breakfast were great as well. You're provided with toast, jam, butter, eggs, fruits and even muesli. There are supermarkets near the apartment. If you need lactose free or almond milk look for the Delicatessen stores. There are plenty of them in the neighborhood.
All in all we really enjoyed our stay. Communication was perfect. We will recommend this apartment to all friends that are planning on staying in Athens.