People reading this who haven't chosen/booked their exact flight yet can learn from others' anxious inquiries. All too often, we're attracted to early departures without thinking of hte consequences --- a 7 AM flight (when you calculate nearly 1 hr drive from Central ATH Hotel to Airport, & requirement to be in line 2 hrs before takeoff) requires you to leave a central-area hotel at 4 AM! So, having to rise at 3-3:15? And pay the night-time premium taxii rate also!
When u realize how this puts a severe crimp into a celebratory "last night dinner" in Athens, you get all cranky. Some of us managed to figure this out ahead of time, and lucky enough to be able to book a 9 or 10 am departure. If not, at least we have Avra & Peris, thankfully.