Lenka and Tamara's place is the perfect place to stay in Athens. It's located in the center of Athens, close to la Plaka (the most pleasant area of Athens) and to the metro station Monastriraki (very central, you can even go directly to the airport from that station).
The apartment is extremely clean, spacious and pleasant (mostly the balcony!!).
Tamara was a very kind host, she even agreed to let me stay one more night without any problem.
If I come back to Athens, I would pick this place for sure!! I couldn't have found better!!