Looking at this floor plan that just about every big manufacturer has some version of. The rear is the same as always - island kitchen, a couple chairs and couch across from a TV and maybe a fireplac...
This is our somewhat different front bath floor plan. It works extremely well for us. My wife was also not a fan of the typical small bathrooms. There is a solid wood sliding door with frosted glass to close off the rear bathroom. Guests can use the 1/2 bath without walking into, or through, the bedroom.