The apartment is very big and spacious with an enormous living room. You have 2 small balconies where you can enjoy your morning coffe. The location is not perfect, main busy and noisy street but it's close enough to the main sights. It's about 10 minutes walking to the Acropolis entrance and around 15-20 minutes walk to the center of Monastiraki & Plaka where all the nice bars are. You also have the Hadrian Arch and the Panathenaic stadium quite close by. If you prefer the metro it's about 5 minutes walk to the station.
The parking spaces are limited but if you are lucky you can find a free parking spot close to the apartment.
The kitchen is small but it's quite equiped if you want to prepare some food in the apartment.
You also have AC in all the rooms.
The checkin/checkout process is smooth because you have a self-checkin box at the entrance so basicly you can arrive/leave at any hour you want without synchronizing with the owner.
It's a good deal as value for money.