Jerry's apartment is exactly what was described... Clean, modern, in a less touristic but very handy location. Jerry's reception and recommendations were impeccable. I would highly recommend this place to anyone.
Tip: follow Jerry's advice and visit the green park area at the end of Kipseli at night time. It's a long strip of parks, lined with local bars and restaurants on both sides, where locals come out with their family, friends and/or dogs. You can experience true Athenians local life there.