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Originally Posted by Black Page

It may work in Batam, but I would not try that in Singapore
I read on the Marina Bay Sands Terms and Conditions:
Besides air-conditioned areas such as shopping centres, restaurants, entertainment outlets and cinemas, smoking is also an offence on the trains, public buses, taxis and in lifts. The smoking ban has also been imposed on public eateries and within a five-metre radius from most building entrances, except for allocated smoking areas that are clearly marked with bright yellow lines. A maximum fine of S$1,000 may be imposed on first-time offenders.

Ok, Singapore is famous of its strict rules, so I checked Sheraton Imperial in Kuala Lumpur:
We offer a smoke free environment. Smoking is not allowed in the building. A $200 cleaning fee will be added to the hotel bill should smoking or evidence that smoking has occurred is discovered.

The smell of smoke is strong, persistent, comes out from the bathroom, is not eaten by water flowing (unfortunately). I advise to not smoke in a non-smoking room, if one respects rules or just cares about next guest.

PS: nice nick, by the way (but I prefer tasting Martell XO )

I would simply just book hotels with smoking rooms. It's not about the fine but more about the decency to ensure the next person who uses the room and is not a smoker can be comfortable.