We had an amazing stay at Olymbia. Ada is a super guest, available and very nice.
The apartment is 3min close to Agyo Nicholaos metro station (walk near the fence for shortcut).
From there you are 4 stations close to Monastiraki near Acropole and 1 h to the Airport.
The place is clean, neat, tidy and styled in such a nice way. It has all amenities mentioned, just bring slippers.
The view from the balcony is very nice , especially at night.
The place is close to a market shop and to a liquer and pastry shop. It is quiet at night, even though you are close to the metro.
Great choice for us, I bet it will be for you as well.