After decades of conversions of busses, semi-trucks and trailers, we decided on something different.
2003, we converted a 1997 Ford CF8000 commercial truck to our concept of an ExpeditionVehicle.
Our conversion took less than a week... while selling everything.
We decided on bed forward, door aft.
Our interior is three paces across by seven paces long.
This is perfect for two adults -- plus a frequent yummy third -- and two RedHeelers.
We are rarely inside, we prefer cooking outside.
Instead of a dedicated 'kitchen' used only a few minutes a day, we use induction hot-plates.
We can cook on our porch, or an extension-cord gets us to a picnic-table.
With two hot-plates, a pair of cooks have elbow-room to craft masterpieces simultaneously.
After cooking, the equipment stores back in their cubbies.
Although we could cook inside, this portable system reduces indoor odor and moisture.
For worshing, we use retired five-gallon stainless-steel Pepsi kegs.
We can take a half-dozen for a weekend, or a couple-three dozen for an extended remote stay.
A quick puff from a 12vdc air-pump for bicycle-tires, and the five-gallons is ready to use.
Our output is a sprayer for a kitchen-sink.
For hot water, we use kitchen 'sous vide' circulation heaters.
A shower uses three-gallons.
A brainiac calculated the photovoltaic to heat a dedicated three-gallon 'Torpedo' Pepsi-keg knock-off at about ten minutes noonish.
Instead of a couch or pair of recliners -- similar to a stand-still house - we realized our RequirementsStatement put us outside most of the time.
I could say 'this beach is my living-room' or 'this forest... or 'this desert...'.
I hope this makes sense.
Nearly two decades full-time live-aboard in this rig, we are pretty sure 'SIMPLER IS BETTER'.
For portraits of parts of our ExpeditionVehicle, toy-hauler I built on a commercial chassis, and our 40' semi trailer conversion, gander at these:
Moments prior to reading your post, I visualized a bus.
Plating over the front entry.
Extending the floor to fill over the former entry steps.
Mount a navigator seat to match the operator seat.
Wall behind the drive area.
Forward bed as part of that wall.