Communication with Maria and Mike about check in and check out was efficient and therefore alright.
However, we arrived to Athens just the night before lockdown started and the hosts did neither inform us about it beforehand nor check up on us while there, even though they seem to live in the same house (ground floor) and we could hear them through the elevator shaft (the house isn’t soundproof). We didn't see Mike and Maria once. With restaurants closed and no kitchen we reached out to the hosts for more info on how to get through the day, but all we got was info on delivery service apps and supermarkets (which is hard when you don't have a doorbell/kitchen).

The apartment itself is very spacious and was in fact very clean, but has a weird vibe and is not very cozy. Despite the space (gigantic room and bathroom) things are dysfunctional (light switches in wrong spots, no shower curtain nor holder for toilet paper and nearly 20 cabinets/ closets which serve no use at all). There’s stuff to prepare coffee/tea, but no dish or dishwasher and no dishcloth. The apartment is accessed via emergency fire stairs, which are small, noisy, and dark at night. an elevator exists, but can not be used by guests.

the house is located in a small street in a vibrant neighbourhood (kerameikos) which is nice. however, 75% of the house is apparently only used for Airbnb.
This gentrification 101. if you are looking for the comfort of staying with locals, having a functional and comfortable place to stay and maybe want to prepare food at home, find a different airbnb or book a hotel instead.