First of all, Nestor is a great host, who takes care of every detail before and during stay in Athens. He helps not only with accomodation but also transportation to the flat. The aparment is really comfortable, spacious and modern, we enjoyed staying there. It may not be in the strict center, but is it suprisingly close to metro station - of course Athens are quite small so it takes half an hour even by foot to get into centre. You don't have to bring a lot of luggage to this aparment, because everything is there - not only towels, iron or hair dryer but also salt, sugar, washing powder and anything you could need during holidays. The flat is a little cold, but I guess it is adventage during hot months (we stayed there in March). I strongly recommend!