The apartment was lovely and so clean! It was perfect for our stay for two people. The walk from the center of Athens wasn’t bad at all. We even walked to the Acropolis and back, and then walked to dinner and drinks, and it was so close to everything. We took the X95 from the airport into Syntagma square (which is about an hour ride) and the walk from there was about 15 minutes because we were dragging luggage. Without the luggage, we were getting around in about 10 minutes. Our flight landed around 9:30am, and check-in wasn’t until 2pm but they were so kind and let us leave our luggage at the office while we bopped around Athens until our place was ready. Definitely recommend and we would stay there again!
FYI — there is an elevator in the building that is pretty snug but definitely helpful when dragging your luggage to the third (fourth if you’re counting like we do in the states) floor.