Everything about the apartment itself was great. The place was clean and comfortable. The beds were great. Shower had good water pressure and heat. There is also a nice bath which we did not use. The layout would be a bit odd if you are staying as a group of four or more - as shown in the pictures (accurate) there are two large beds in the same room, separated by a pull down blind/shade. For us, as a couple, the layout was totally fine and very spacious and comfortable. We also made use of the washer/dryer which worked perfectly. Check in process was smooth and easy. Communication with the host was great.
So for the host and the apartment itself, I would give 5/5.
The only caveat that I think people should be aware of is the location. Yes, it is very central. And it is great during the day. Unfortunately this particular neighborhood has declined somewhat in recent years and it is not very pleasant once the sun goes down. The door to the left of the building's entrance is a sex shop. The door to the right is a sex video store which was actually publicly advertising glory holes. Not exactly ideal. The building is right behind city hall and about 200m from Omonia Square (google it). This area (particularly Omonia Square) attracts a lot of drug addicts, petty thieves, etc. and has unfortunately become somewhat notorious for its seedy character. One night there was even a huge and very loud fight outside our window. Although we were not comfortable being on the street at night, the apartment itself felt very safe. Because of the issues with the nearby area, I would give a lower rating to the location.
Again, none of this is the fault of the . So overall I still give this Airbnb 4/5 stars. Our stay was overall very comfortable and I would say it is worth the money.