We spent a few days on vacation and I was so happy to find out that in addition to providing an option to change bedsheets/towels, there are now recycling bins in hotels. The hotel that we stayed at actually gave us a $5 credit for not changing our bedsheets on a daily basis, which was great since we really didn't need the sheets changed anyway.
I am now waiting for hotels to start installing filtered water systems in addition to their ice machines. If you think about it, hotels would stay alot of money (and it would be great for the environment as well) if the hotels installed filtered water dispensing machinese instead of selling the water bottles.