Early Bolers lack the notched recess under the front sofa, so no room there. A solid frame member runs the full width across the front, leaving only about 6-8" between the sofa and the full-width raised floor. Closet is a no-go due to the wheel well.
Hafta say... the frame modification that created the porta-potty garage was a stroke of genius on someone's part...
It would fit under the dinette during the day, and I like Gilda's suggestion of a cover to make it a footstool. Wouldn't fly with my wife though- the very thought of a toilet just inches under her food
- and I don't think it would fit under the dinette at night- my recollection is only about 13" of clearance with the table down.
Not too many options, I'm afraid. The outside pop-up cabana is one. I've seen a few people (that cooked outside and used an ice chest) turn the fridge
space into porta-potty storage.
Here's one more... if you don't need the front sofa as a bed, this mod creates an enclosed porta-potty space while preserving the open feel of the trailer and a seating spot. It's not mine- just happened to see it and thought it well executed, so saved it to my "Ideas" folder...