Hello :) Thanks for the reminder, I changed it to office=yes :)

It is the (customer-facing) counter of this company: https://www.goldair-handling.gr in the airport. My understanding is that they are handling luggage. 

If I remember correctly, while mapping, EveryDoor did not present an option for "office=yes", but offered an option to create the fixme :)

Thanks again, Mateusz :)