Not really that small of a quantity when you consider the number of single night stays people have around the world and after that any bottles that have been used or bars of soap opened are then thown away.

I am not particularly into the "green" movement, I drive a car that does well under 20mpg, fly first and business class etc etc, but I equally can see if you equate any action any one person takes or one chain of hotels takes against that of everything else in the world it will be a minuscule amount.

However for ease of figures Starwood rather than Westin has 292,000 rooms worldwide and if you work on 80% occupancy and average stays of 3 days say using 2 bottles of shampoo and body wash and a further 2 hadwash per stay, so 6 bottles in total that equates to 169,593,600 bottles a year, not may I point out counting conditioner! Doesnt seem that minusclue to me!