Are you sure you mean AND here "comfortable Queen bed and a not-too-cramped toilet/shower"? I have a rear entry American Cruiser and I have a huge bathroom by class B standards. However, in order to make a queen bed, you eliminate all other places to sit and it is not easy to get out of bed. We have opted to sleep in the two twin bed configuration, but still we are making up the dinette bed every day or sitting outside or sitting on the side of our beds (which is not bad). Don't get me wrong, we love our class B but it has no where near the room of other campers we have had (two pop-ups, three trailers, and a class B). So, if it is roominess you want without sacrificing comfort, go with a class C. Here's our floor plan -
