There is a lot of variety in washer installs, depending on floor plan and model. Coaches where the washer is standard often have a somewhat better set-up than those that have it as an option, but sometimes they just stick it wherever they can in the floor plan. As with most things in a motorhome, access for maintenance is way down the priority list, but higher end models tend to be better.
Former owner of 2004 American Tradition and several other RVs
Home is in the Ocala Nat'l Forest near Ocala, FL
Summers in Black Mountain, NC