First of all, the location is very good. I can say even brilliant to be with a small kid. Since it is within walking distance to all the historical places (up to 1 km), which we managed to visit without use of public transportation/taxi. A house is located in 5 mins walking from the metro station. It is quite area, though just in 3 mins you in lively and loud central
neighbourhood with a lot of cafes, restaurants and children playground. We were blessed with good weather +28-30 in July but if it hot, the place has an A/C and large window screen from insects. The supermarket and bakery are around the corner which we used frequently. Overall, great value for the price asked. It was wonderful 3 days in Athens in nice apartments.
Bonus tip: when you are in Athens, get the Acropolis Combo Ticket right away, as it will allow you to enter all the greatest historical places using one 30-euro ticket valid for 5 days.