We are here in room 603 @ the Aristoteles.
If you are staying at the Parthenon, I recommend taking the Metro (train) to Syntagma Square, then connecting south to the Akropolis station. When you exit from the Akropolis station, look up (at the Acropolis

), start walking towards the Acropolis, & about 1 block & 2 right turns later you should be at the Parthenon.
If you are staying at the Aristoteles, the Metro is not running between the Monostiraki & Omonia stations. Get off at Syntagma & connect to Omonia from Syntagma. Archonon (street) heads north from another square ~5 blocks NW of Omonia Square. The Aristoteles is about 1.5 blocks north from the square on the left sign, tall verticle blue sign on the outside of the building.
I don't have all my maps handy, will try to post Metro directions for the IC tomorrow.
It was a fun trip here.

We spent Saturday at the Bloomington, MN, Embassy Suites after the airport was closed & flew here Sun-Mon via Houston & Frankfurt.
Reading through the recent posts, it appears we arrived between the public service strike

on the 12th & the ATC strike on the 15th

. Such is Greece.