In reply to tipsy: Well we could be obtuse and pretend that no-one ever exceeds capacity, or we could be honest and admit that it's long been a practice in Chamonix and other climbing areas of people to rent 1 or 2 bedroom flats that sleep 4, and perhaps bunk an extra 4 down on the floor on the rare occasion we're actually all there at the same time rather than in the mountains.
We're not wasters, we're not going to trash the place. We'd just like to save a bit of money, have more comfort for wet weather days, and don't mind sleeping on the floor.