The apartment is ideally located, just minutes from major sites in Athens. We stayed for a week and never took a metro or bus. Being so close to downtown was a great bonus.
The apartment is exactly as described, clean and comfortable. The kitchen has everything you would need, although you likely won't need to do much cooking, considering the amazing restaurants just outside. Upon arrival Kostis was very helpful, met us at the location, and walked us through the apartment. He even sent us a message after a few days just checking in to see if there was anything else he could do for our stay.
Overall, I would say this apartment is wonderful, a perfect location to spend a few days, or like us, a full week, in the heart of Athens. Highly Recommend!