We did have some small rooms on our trip, but I think that the Poppi took the award for this category. If one were charitable, it might be assumed that the Lilliputian size of the rooms is intended to encourage the inhabitants to get out and explore, except that there was little but farmland around to see.
Mind you, walk across the road and down the highway a little and there was a gloriously huge supermarket to explore, which two of the four of us did in pursuit of supplies.
I think it's probably more likely the result of maximising yield per square metre.