I think it makes sense to spend money on fitting in the shower or some kind mixer  for clients (which you can then claim as business expense), as 18months is a long time, otherwise you will be worrying every time client comes that he might nt be happy with that arrangement. They might not say anything, but might not return. I agree that bath is nice, relaxing and luxurious, but most men who come in for an incall, want to have sex, shower and go, not splash in a bath.