I do not think this search engine behaviour is good for guests in any sense. I had cancellations before from guests that searched in Madrid, and found my house. Later, they had to cancel when they noticed my house is in a different town 30 km away.
And , on the other hand, being a not touristic place, Griñon has several wedding places, i am sure people look for places to sleep in the same town, to avoid driving long distances after the wedding event, and airbnb is showing them places that dont match their needs. Having my house right there!
In my view, booking.com search works much better and i have to admit that when i travel i usually book my accomodation with them. Being an airbnb host!