In a hot and dry area, designers wanted to make a super-efficient hotel. They used fancy tools to plan the building and checked how much energy it might use. By testing different ways to build the hotel, they discovered the best choices to save energy. They found that special windows and solar panels can make the hotel use way less energy—about a third less! Some of these energy-saving ideas can also make money back quickly. Overall, these ideas are good for making eco-friendly hotels in hot places.