The house was as it looked in the photos and was clean. It is useful for 4 people to stay. There is Wi-Fi at home (there was no internet when we first entered the house but it was easily fixed by resetting the modem). The house is about a 10-minute walk from Kerameikos metro stop, and not far from the city centre either. You can always reach the host on the phone.
There is a school right next to the house and there is a lot of noise starting early in the morning on weekdays.
We had one incident and unfortunately it kind of spoiled the enjoyment of our stay:
The host gives you only one key to use during your stay. For check-in, he puts the key in a secure box called “lockbox”outside the building, sends you the password just before your stay starts, and you take the key from there and enter the house. You do the same for check-out; you don’t have to meet the host physically during your stay. There were four of us and we asked the host for spare keys as we wouldn't be together all the time. The host said they couldn't give a spare key and suggested that we keep the key always in the lockbox when no one was home so that the first person who comes to the house can get the key from there and enter the house. Although this seemed a little strange to us, we had to accept it as no other alternative was offered. If I want to come home early and sleep, after entering the house, I had to leave the apartment door open, go down 3 floors, go out of the building, put the key in the box and return home so that the person who will come after me can enter the house with that key without waking me up.
On the fourth day of our stay, we all left the house together, put the key in the box (because we we’re not planning to be together all evening) and shuffled the code of the box as instructed. All of us remember this very clearly because everyone warned each other to lock the box properly. When we got home after midnight, we couldn't find the key in the box. The password was the same, but there was no key in the box. We called the host and asked him if they took the key, he said they didn't and he'd send someone home with a spare key. During that hour, we waited outside anxiously, thinking that there was definitely a thief in the house. Thankfully, there was no theft and nothing was lost. Then we asked the host to replace the door lock because someone had taken the keys from the box and neither they nor we knew who had taken it. The host denied our request strictly, implying that we lost the keys elsewhere. We insisted that the door lock should be changed for both our safety and theirs but he refused. Then we called Airbnb to report the situation, and probably Airbnb called the host, because right after, the host called us and said (shouted) in an angry tone that it was all our fault to lose the keys. Then they said they would send someone in the morning and change the lock. They came in the morning and changed the lock but it didn’t end here. There was another surprise one day after our trip ended, I got a message that the host was asking me to pay the cost of the lock replacement (210€). Later, they included Airbnb in the process, and Airbnb refused that request. (Airbnb support is great. During and after the incident, they handled the situation very professionally).
The guests must be provided additional keys and the lockbox should be used only for check-in and check-out processes. Having only one key and therefore having to keep it always in the lockbox when everyone is out of the house is not safe.