Even if the pod is somewhat automated (e.g. linens are somehow changed without human intervention), you're not going to be able to get around the fact that you'll need someone to collect the dirty linens once in a while and replenish. And really, the tired business executive is the ideal customer ... but you're probably more likely to get a bunch of less-than-ideal customers whose actions inside the pod are going to…
Why is everyone assuming this is a fully automatic coin operated system?
I read "miniature, ready to go hotel rooms that you can buy, put anywhere you want (inside a building) and figure out how to manage yourself."
Seems to me like it'd be a good way of doing exactly what you have mentioned: a podhotel.