Everything was good.
The apartament is near to citycenter, many coffee places and restaurants in area, 30 minutes walk to Acropole and 10-15 minutes walk to metro station (green on blue line). More than that, you can go by bus in city center.
The guest was very nice and wait for me after 10pm for check in and offer me a tea and all the informations. More than that, she told me that I can ask for any other local information about the city.