This isn't a startup. You're looking at the intersection of people who:
* Need to get away from distractions.
* Lack self-control to reduce distractions themselves.
* ...but do have discipline to check in regularly to this distraction-detox zone.
* Have something they can do to fill up time that doesn't require connectivity. No google docs, and no streaming music.
* Are not claustrophobic.
* Will visit regularly.
* Will pay.