Hi! I lived in Silverdale for 3 years and know the Seattle area also (military). Do you already have cleaning service in place and just need someone to greet/give keys to guest(?) or all the above.
My daughter host an apartment in Baltimore where she lives (graduated from Silverdale High) since this building already has self check-in; she got permission to put self check-in lock (Schlage) on the Apartment door. Now, she just sends check-in link, which has phot instructions - via Airbnb Msgs, to Guest before check in! Also, you can give this self chk-in info to Cleaning Srv even if you have several different supporters.
Could this help you? Also, I may know someone in Seattle area who's interested in assisting you. Her FB profile is Psalmist Ava Gordon and you can tell her Velma from Surge365 referred her!