We arrived at 2 am but with the clear instructions for self check-in sent to us beforehand it was no problem at all.
Location is great, metro and a big supermarket (Lidl) within walking distance. There is also a bakery and pizza place close by. We loved the big balcony with superb view of the Acropolis!
Aris was friendly and easygoing, he checked in on us a few times to ensure that everything was alright. Thanks for this first wonderful airbnb experience!