Sterile...shmerile. Who cares what the inside looks like if you can't be in it because it's too cold or impossible to heat efficiently. I spent 6 months building a TT to withstand temp extremes and the Oliver looks to have it from off the showroom floor. I'd bet yours is going to worth more in ten years, also, lol.
If you're looking for lodging for a single guy or even two, that is a great pick. Hope you enjoy the OLiver! BTW, you'll notice the sound difference right away. The added insulation and double paned windows cut all the exterior sound and voices inside get lowered. Comfy!