We were a family of 5 staying two nights in Nestor's apartment, and we couldn't have found a better base for our short stay in Athens.
The apartment is spacious, clean and functional. Everything is well explained and Nestor and Chris were available 24/7 it seemed to help.
We found the multicultural neigbourhood very fascinating, and the metro is a 5 minute walk, so it was easy to reach other parts of town.
I don't think it's possible to find better value for your money in Athens!
Highly recommended!!