The location being near Psirri but not in the heart of it was great in terms of noise. There is lots of graffiti on this street (and all around Athens), but it does seem to have a lot of foot traffic.
Be sure to check out the rooftop terrace! It’s got a spectacular view of the Acropolis - similar to ones that you pay for at restaurants.
Check in instructions were very clear and hosts were quick with responses.