Thanks, good points. Alternatively, if you are a morning person I guess you could ask for late check-out (but it means checking in the night before).
Here's what I'd like to see - massage shops that a) allow you to book a room for an hour or two with a BYO masseuse, and b) provide a room with a bed instead of a massage table. Happy to pay a bit more than the regular hourly rate if they keep it clean and comfortable. I know a few that do a) and one that does b), but not both.