Hilton's latest sustainability efforts are driven by customers looking for eco-friendly hotels. : Fresh towels, clean linens, and toiletries are a few of the items guests expect when checking into a hotel room. They're considered basics at just about any hotel, but they also contribute to the large amounts of water and energy consumption by the hotel industry--not to mention the waste it produces. The long-term effects are not only bad for the environment but they're also bad for hotel costs.