A lot of iso wards do not have showers. A previous poster mentioned areas in hospitals in which there are showers, but that would interrupt hospital flow.
Most hospitals have stairways, which are cement. They would be easy to sterilize daily with bleach sprayed on the floors and walls. That could be the easiest way to transport workers to a tent outside the stairway door.
OK, so large interior shower facilities are typically poorly located for such purpose? Minimizing distance to an exterior tent would be good I’d think. Locate an ad hoc Ebola isolation ward close to ground floor, or are existing isolation wards preferable regardless?