My wife, baby and I stayed at Yannis and Helene's for two nights. Great little appartment in a good location for accessing the sights of Athens. The hosts are brilliant, helpful and responsive. It was really a pleaure. Only thing to note is it's on a busy road though so if you want to spend quiet time on the balcony, it can be hard with the traffic. The appartment is quiet at night once you close the windows and blinds though. We had our one year old baby with us who is super active and runs around. If you have a spritely kid, I would recommend looking for a bigger place to stay. All in all, great stay.