We had a wonderful staying in Athen at Versaweiss apartment.
It is very well located in the center to reach by feet the most common places to visit in the city.
The apartment is huge and the rooms are very comfortable, we were six people and the space is absolutely enough.
The decoration is friendly and fresh; the common bathroom is huge and the second bathroom located in one of the double bedroom is well accessorized.
I definitely recommend the apartment for a visit in Athen in particular for groups !