I would recommend staying in this neighbourhood, but not in this apartment and even less with its hostess, Katerina. In a few words, do not expect any help in case of a problem. My children (16 and 25 years old) stayed here. Someone, who knew the code of the key safe box (or already had the key to the apartment), came into the apartment and stole their money (500 euros). Katerina refused to change the code of the key safe box and did not help them with the police. She told them to put the money into the safe-deposit box of the apartment. After a few days, that safe-deposit box, strangely, did not work anymore (when they were locking it, the message "locked" was now replaced by "secure", and they could easily open the lockbox…). They did not feel safe in the apartment.
Katerina sent the information for the arrival the day they arrived, which was late. A few hours before arriving, they asked her a question about the neighbourhood, like where they could eat when they arrived. She didn't answer until the day after, when this information was not useful anymore. The apartment had three bottles of shampoo and only one bottle of body soap, so it was not well prepared for the arrival.
On the evening of the second day, someone came into the apartment and took all their money. They searched into their stuff but only took their euros. There was no trace of breaking in. My children made two mistakes that day: 1, they thought that leaving the key in the safe key lock box was safer than carrying them with them (they were told that there were a lot of pickpockets in some metro stations); 2, they haven't yet put the money in the safe-deposit box, but I have a video that proves that the safe-deposit was not safe either. They immediately messaged Katerina, who told them to go to the nearest police station. They asked her if the language (they only speak French and English) would be a problem. She did not answer that question. They did some research online and saw that there was a police office for tourists. They decided to go there when it opened in the morning. Katerina only asked for news because I sent her a message asking her to help my children because I worried about their safety. I was very surprised by Katerina's reaction to the theft in the apartment. If I was an Airbnb host and my guests had 500 euros stolen, I would at least accompany them and assist them at the police station. I also asked Katerina to send to the police the names and addresses of all the people who have access to the key cabinets. Katerina did not transfer me the name of these people and did not specify if she had transferred the information to the police. The police were stunned by Katerina's behaviour, notably because she advised my children wrong. My children shouldn't have come to the police; they should have called the police so that they could have gathered information (fingerprints, for example). The Airbnb was a crime scene.
Even if they decided not to use the safe key lock box again but rather to carry the keys with them, my children asked Katerina to change the code as soon as possible and, from now on, specify in the apartment description to never leave the keys in the safe key lock box again while visiting the city. Katerina said she would send a colleague to change the code the next day. Since they didn't have news from her, they asked if her colleague had changed the code. Katerina said that they would change the code once my children left. Knowing that someone knows the code of the safe key lock box and refusing to change it after your guests were stolen is unacceptable. It is not safe.
Katerina showed no empathy for my children, and she didn't ask once how they were feeling. We are seriously questioning if Katerina's messages were automatic; otherwise, how could she have asked us to rate her apartment with five stars when my children were barricading the door the last two nights after seeing that the safe deposit box might have been trafficked?
By reading the comments from previous visitors, I also see that suggested improvements have not been taken into consideration. For example, there is no shelf in the shower (you put your soap on the floor, which is not hygienic). Items of Furniture in the apartment are very fragile (the soap holder breaks in your hands, the living-room lamp is poorly constructed, etc.). There is no reserve of bins at your disposal. The toilet paper is very thin, which is uncomfortable, especially if menstruating. Etc.
These are the positive points of their stay, which are more related to the nice neighbourhood of Koukaki:
This apartment is well located (2-4 minutes walk from the metro, 10 minutes from the Acropolis and Filopappou hill). The neighbourhood is nice (there are a lot of excellent restaurants, several supermarkets, fresh fruit markets, a pharmacy, etc.). The people were very friendly and welcoming. In the apartment, the Wi-Fi and the air conditioning worked very well. Globally, the apartment was clean.