It's hard to know if you're choosing a hotel that is managing its environmental impact. It shouldn't be. If you go to the grocery story it is easy to find sustainable foods. If you buy an appliance you can quickly find the product's energy star rating. But - if you want to know about the energy performance of a hotel before you click "buy" on an online travel agency or the hotel website, it will take you time - perhaps a long time - to get information....