Just checked back on www.vintageairstream.com
and not that much infomation other than photos.
RJ Dial says the Falcon (1958 to 1961) was much like other 22' models saying it was half Safari and half Caravanner in layout.
I have been in one Flying cloud that reminded me of this floor plan and door and window placement.
This is the no privacy/storage model for sure. My Safari has three separate sections with rear bath/mid double bed and two closets with vanity and front galley with gaucho. The open concept seemed like the way to go but separate sections are much better in use.