This would have been a good Herb Caen item: The rooms at The Peninsula Shanghai have a walk-in wardrobe and even a cupboard where your newspapers and laundry are delivered.
For laundry, you fill out a form, put your clothes in a cloth bag, and place them in wooden basket. Then you drop it in the cupboard and press “service.” A “valet runner” retrieves it from a locked access door that faces the corridor. Six hours later your laundry is returned clean. The walk-in wardrobe also has a nail polish dryer.