Wife recently spent a couple of days in hospital for surgery/recovery. She was in a normal double-occupancy room for recovery (i.e. not ICU), yet was still woken every couple of hours by someone taking vitals, drawing blood, doing respiratory checks, bringing food, etc. And the room was hardly ever really quiet because if someone wasn't there to see her, someone was attending to the person on the other side of the curtain that divided the room. She said she hardly slept.