I struggled with this same thing when we 1st launched. At first, I listed it as a home and disclosed in the description that it was a duplex. To no avail, people don't pay attention, and few had issues. It is unfortunate that Airbnb does not have an option of Duplex, but based on their descriptions it is not an apartment. So, I have since settled on including "Duplex" in my title. Since then, I have only had one person, lol, that apparently "didn't realize" and wanted to cancel outside the cancellation period. I let her cancel for refund because who wants to force someone to stay and get a bad review, except I did charge her $100 Admin fee for wasting my time. I mean, it is in the TITLE for goodness sake! C'mon folks, please read. 🤓