How to manage 3 bedrooms under one listing

Hello everyone, i have recently taken over an apartment that i would like to publish on Airbnb. I would like to make all three bedrooms available but i prefer that guests can choose between them through a single listing, from which they can select the room and book.

I don’t want to create a separate listing for each individual room and i’m having trouble understanding how to set this up and would really really appreciate any help or advice.

Thank you in advance!