Intro
I searched existing entries in the forums and I found one similar post/question, but the one reply someone made in that post was unhelpful (it was another host who said, paraphrasing, "too much work involved to create this feature, continue to do it manually.")
Problem
I have six listings for my home, a variety of rental options all within the same house. Syncing calendars manually between listings within the same property is a time-consuming experience suffering from bad UX design.
Proposed solution
I would really, really like to see a feature implemented that would allow hosts to sync listings associated with the same property so that, for instance, when someone books my house, my bedroom listings automatically set to unavailable for those dates, and vice versa.
Attainability
Airbnb now "syncs" rental activity across all listings in the summary of upcoming reservations provided on the dashboard. This functionality is clearly within reach. (source: former IT professional)
Impacts of failure to act
The lack of such a feature causes hosts with multiple listings for one property to be unable to use instant book, and costs significant potential business/income to both the host and Airbnb. It also causes hosts to decline way more requests than is desirable.