I definitely think there's a market for 6-9am bookings, either men who want a shag pre work, or after finishing a night shift etc. However, I think it depends on a). your natural body clock, i.e. it wouldn't end well if you're a night owl, and b). if it's feasible in terms of hotel access or not disturbing neighbours pre 7am.
So, if it fits in with your lifestyle, I'd do it, but I wouldn't put myself out otherwise, no.