Nestor's place is at kind of central place in Athens. ~20 mins walk to Acropolis and Syntgama Square. The living place is decent but the suburbs and the common area is not great. The lift was broken most of the time and I saw a guy stuck in the lift for ~30 mins before it started working. This place is in 3rd floor so it would be lot of lifting if you are using stairs.
Stairs are very slippery so be careful. The living area is good and has most of the amenities. The electrical system may take some to get used too and can be confusing at first.
One thing which bumped me was that the owner asked me to give my Passport# after I checked in. It would be better if this could be done beforehand and I felt little awkward as airbnb gives a mechanism to check the id to the owners. Since it was not my SSN so I gave it but it did feel little awkward.
One more thing is that Greece is really a heaven for pick pocketers. Nothing to do with this airbnb rental though but it left a sour experience when I got pick pocketed in the neighbothood. The police mentioned there was ~65 pickpocket report the last day.
Overall the house is ok for the bucks you are paying.