There's actually quite a few different floor plans in the two models that you have mentioned.
Early 70's Tradewinds and Safaris usually had a wet cell bath, meaning the shower pan is the bathroom floor. The wet bath is short front to rear, which allows more room in the front of the trailer. Same goes for the Safari.
However, there are distinct differences between the double and twin bed floor plans. A good source for pics is here:
We had a very good time with our 1971 Tradewind, despite the often criticiqued wet bath.It was a near perfect floor plan for 2 adults, and occasional visits from a friend or 2 grand kids.
We especially liked the amount of storage this floor plan offered. When we emtied out teh trailer just before we sold it, the contents of it just about filled up one of our garage spaces..