The flat I stayed in for three days has a great location right in the middle of Athens. As a matter of fact, there is a truly excellent restaurant literally around the corner, also a little shop with everything from stamps to cookies, milk- you name it. Also small coffee shops everywhere you look where one can have coffee and baked goods for breakfast, a pharmacy a block or two away, and not too far to walk to the sights one wants to see.
The flat is super, comfortable, roomy, lovely decorated, great balcony, good kitchen, good air-conditioning, easy to get in and out; the owners always ready to offer assistance if needed. I was very pleased with my stay, and can definitely recommend it.