I just added our guest house as well... and it isn't showing on the search. I'm happy to know it may take a couple of days, I have not been able to contact Airbnb with the question, as I can not figure out how to do that as well 🙂 ?
if it is any consolation, my apartments also do not show in the search by area. I do hope that Airbnb will sort this issue out, as it is very frustrating and, of course, it does not help our business.