We were disappointed with this apartment.
In our view it is not lux.
It is basically one room containing kitchen, dining lounge and bed and a separate tiny bathroom with a handheld shower.
It lacks a dishwasher, dryer coffee pod machine or luxuries that would entitle it to be a PLUS ranking in our view.
It was clean and in a relatively good area of Athens to see the city but we won't be using the apartment again.