This, perfectly located, apartment is extremely clean and comfortable. It's a few steps from a metro station and one of the best areas of Athens: Montastiraki. It's on the 4th (of 5) floor of a block in a pedestrian area. The noise from below can either be appreciated from the small balcony or cut off with the insulated windows and blinds. The bed is extremely comfortable - nice and firm and with several pillows. The kitchen had crockery and cutlery for two. The wine glasses probably hold a bottle! Microwave, 2 hot-plates, kettle, capsule coffee machine. The shower is good and the professionally laundered towels are soft and absorbant. It's a perfect base from which to explore Athens, or in which to shelter from the heat; thanks to the air-conditioning.
I got a metro (blue line) direct from the airport (about 1 hour) by using the 3-day all transport ticket recommended at the airport train station. €20 in May 2022. I don't know if they do 4, 5... day tickets.
Theo and his team were always available to help - he booked me a taxi for my 3.30 am departure (!) and thought to give me the number plates and driver's name - and advise on retaurants etc.
If you want a central, clean and comfortable place to stay, your search stops here!