It's not unusual in Asia. My most recent example would be PA in Bangkok (LC).

Upscale business oriented hotels sometimes offer free pressing. Some do free shoe shines, especially if you're staying in a suite. However, since you usually find a card in the room or a statement in the service booklet in the room, it isn't a benefit reserved for Plats. I've also heard of (but have not experienced personally) some Sheratons such as Singapore extending a free laundry benefit to guests in Towers rooms.

I've seen a free self serve laundry in at least one Sheraton. They even handed out free detergent packets at the front desk.