Christina's place is located close to Syntagma square and is within walking distance to many restaurants and most tourist places. The apartment has 2 rooms and has enough space for ~3 people. Christina is very responsive and accommodated our requests for some extra pillows, kitchen appliances, etc. Check-in and check-out were smooth.
The only downsides would be the view from the windows and natural light. Windows open in galleries with walls on the other side. This did not bother us much because we were roaming around in the city most of the time.