I've seen a few "One week, One load," and many people removed it from the amenities to avoid confusion.
Two loads per week are generous, but I keep thinking, if they can do two on day 7, why can't they do one on day 4?
I would never send them to the laundromat, which, even two blocks, is time-consuming, very inconvenient, and can get expensive if you add detergent, softener, and dry sheets.
I was about to do it for three days or more; now, after reading all these comments, I am still thinking about it.
My machine is a built-in unit inside the entire bathroom. Since it is very visible and approachable, I feel they'll see it and want to do laundry every day.