Do not hesitate to book this lovely, clean, well appointed, apartment in a great location within walking distance of major historical attractions. The large balcony has an unobstructed view of the Acropolis/Parthenon and Temple of Zeus. Amazing to sit on the balcony in the evening sipping ouzo or your favorite Greek beer; there are no words to describe how spectacular a memory this is alone. Keep in mind that Athens is a large bustling, noisy city but inside the apartment is quiet.
Tanais as a "concierge" is an added bonus. He was very helpful to us in making taxi arrangements or giving advice as to places to visit. He is a very kind, gracious man. He did so much for us and wouldn't accept a tip ! He was available via communication on the "whatsapp".
You must explore the islands while visiting Greece. The beauty of the sea is breathtaking. We cruised to five islands via cruise ship but you can reach these islands easily from the port in Pireaus (gate 8). Hellenic cruises has fast and slow boats at reasonable prices. Some islands are close enough to do one day trips. We visited Agistri which is beautiful and has several beaches. We'd return to see Hydra.
There is so much to see and do you could stay for months. Don't hesitate to use Uber as the cost is half what a taxi would charge and the drivers we experienced were knowledgeable and very personable. The Black Duck Restaurant in the Athens City Museum was one of our favorite dinners. The people that we encountered hold up to the reputation of having super Greek hospitality. From the moment we landed at the airport, to auto rental, super markets, restaurant staff we encountered polite, kind people. Only negative experience was the scooter/motorcycle drivers that jump out of nowhere and drive like they own the road, and sidewalks!!
Enjoy Greece!!!