Many Japanese hotels have 400% variance in room size; US hotels often have 0 variance and at most 20%. In Japan the room size is critically tied to business status; the economy would collapse if a secretary stayed in the same size room as a manager. I've seen hotels with 20 different sizes of rooms -- just so everyone from the same company can maintain the hierarchy. It gets to be quite comical sometimes. Nikko built several hotels outside of Japan using this same style (aimed at Japanese business travelers), for example the Four Points in Sydney suffers from this (causing much dis-satisfaction as the room rates are not tiered to reflect the variance in room sizes). Hong Kong hotels have much less differential in room size, but 100% is common for non-suites, and that does affect the room choice and satisfaction for many people (particularly from the US who are accustomed to lots of wasted floor space).