The first thing to know is that this is not an apartment, this is a house, a roomy, airy, well-decorated house. Three of us spent about five days there and never felt crowded. Ilias is an excellent host, in addition to a page of instructions that covered everything we needed to know, we also had detailed instructions on the best local bakery, restaurants, and instructions for public transport. And because Ilias lives there when he is not renting it, it has everything a complete house would have, including sufficient bedding and a great, fully stocked kitchen.
It is in a desired Athenian neighborhood, about a 20 minute from the Acropolis. Although you could reach the subway system in about 10 minutes, we just walked straight to Plaka and most of the desired areas.
How long would it take me to decide to stay there again? Less than a minute.