Planning: Built-in captain's beds

I know I've blogged about twin beds in guest bedrooms before (here and here).  But I haven't tired of the subject yet, so I guess I'll continue.

[Janet Kimber via desire to inspire]

I really liked this image because 1) I can easily guess the dimensions of this room (9' x 6'-3" minimum), and 2) it's super efficient.  I wouldn't want a whole house designed so compactly, but the yacht-like design here seems fitting since it looks like a beach house, and those are captain's beds.  Anyway, here's another way to squeeze in a guest bedroom in a small space.