Don't do many 1hr bookings, mainly HH, especially on a first meet... If it's a "Reg" then 45 mins is my preference...
If an hour booking though, I would prefer shower time to be outwith paid for time... Would also say the same for a HH booking/45 mins (if not more so) ... If it's included in booking/paid for time, chances are I won't return visit...
That's all based on the premise the punter doesn't rip the piss and spend an inordinate amount of time in the shower, which I don't...