Turndown service?

Do you know that many of the high end hotels have this service called 'turndown service'? Maybe I haven't stayed in enough 5-star hotels to notice this.
When we were at Venetian, we saw this placard by the bed side indicating that there is turndown service available. So what is turndown service?
(taken from here)

"Turn-down service is when the hotel staff come into your room in the evening to turn down the bedcovers. The conventional practice is to turn down a corner of the blankets to make the bed look inviting and that much more restful. They also either fold the bedcover nicely at the foot of the bed, or put it (and the day cushions) away in a discreet shelf in the wardrobe.



Some hotels have taken to folding the bedsheets in pretty ways and some even scatter rose petals. Chocolates on your pillow are also the norm.


Turn-down service is not just about the bed. At the Ritz-Carlton, staff doing turn-down service also tops up the ice box, draws the curtains, puts out your bedroom slippers, turns on the radio (usually to a classical music station) at an audible but soft volume, tidies up the room a little, tops up your toiletries, folds the end of the toilet paper roll into a little triangle, and sometimes changes your bathroom towels.


Also in Disneyland, every night greeted guests with a message from a different Disney character."

Hmmm...do we really need this kind of luxury?