This drives me crazy when I am visiting AirB&Bs. My husband and I cannot sleep comfortably in anything smaller than a King so that is a deal breaker. I often have to look through dozens of listings to find a rental that has a king at all, let alone one that is decorated in a way that I find appealing. When hosting I know that few nearby AirB&Bs have a king and it does bother me that people who want a king can't sort for it and find us quickly.