Divide Athens, Greece into southern coastal areas. How to judge the size of a house in Greece?

Athens, Greece is divided into southern coastal areas, central core areas, northern rich areas, eastern rural areas and western poor areas. This simple and rude division is actually very wrong, which will seriously mislead China people who plan to emigrate to Greece to buy a house. For example, in the center of Athens, there are both a good area of 3,000 euros per square meter and a bad area of 3,000 euros per square meter. The value of Greek real estate consists of two parts, one is the value of the land attached to the house, and the other is the value of the house itself.