For me: During the stay, the front desk. If that doesn't resolve the problem, member services after the stay. Some of those things could be corrected fairly quickly (hangers, etc.) but others probably require a more intensive visit by maintenance.
They are normally pretty good about taking care of things. We did have a dishwasher conk out on us at BCV once and it took several days to replace it. That was a bummer, because the dirty dish water was slowly fermenting in the bottom of the unit while we waited. Luckily there was a pretty good seal on the dishwasher door. ;-)