@Inna22. Many hosts have smaller bedrooms and disguise this with the type of beds they offer. Sometimes they are simply using what they already have, or purchased cheaply. And often they are in hosting for a short time before they sell up too. If you regularly host kids 3-12 then bunks are popular but above this, queen beds appeal to the teens, tween girls and adults so less bed redundancy.
As you are an experienced host I'd be guided by your guest booking demand and feedback.