Christina's place is amazing! The location is tops, the couches are so relaxing (and much needed after a full day's of walking), the shower is awesome, the bed is comfy and Christina is a thoughtful host. She was friendly and professional in her responses before, after check-in and throughout my stay. She gave me great hints of places to go around Athens and Plaka. The only bad thing about my stay...I couldn't stay longer. I was there a short time, but her recommendations were spot on. She also helped set up a taxi the morning of my flight through a good friend.
For your first time in Athens, or first time in the Plaka neighborhood, this is a great location! Definitely worth the stay :)