Self sufficiency with minimal luxury. Everything in this rig works: you have heat, A/C, shower inside and outside, stove, fridge, generator, storage space. 

Ford E350 Chassis  V10  engine 6.8L
GVWR 11,500 GCWR 18,500 lbs towing capacity 
36 gallon fresh water tank
6 gallon water heater tank
inside and outside shower
18 gallon propane tank
Cummins generator 4000w with only 274 hours
Zamp solar array with 2 panels on the roof : 600 w continuous output
Nature's Head Self-Contained Composting Toilet (uses coconut coir)
Faux wood flooring-light gray
Minimal furniture: spacious interior - one bench seat
I have manuals for the rv, solar, and composting toilet
There is a queen bed area in back and a front overhead bunk for sleeping. Mattresses would need to be added. 
Maintenance: Regular oil changes. Good newer tires. No issues, no leaks. Water system and roof have been recently Inspected and/or maintenanced.