Dunhuang has a surplus of accommodations. During the peak season, hotels offer 20% discounts; during the low season, discounts of up to 60% are readily negotiated. In spite of what you may be told, most of the budget accommodations (including the Feitian Binguan) only have hot water for a limited number of hours in the evening; if you're told the hotel has 24-hour hot water, ask for a demonstration!
Note: This information was accurate when it was published, but can change without notice. Please be sure to confirm all rates and details directly with the companies in question before planning your trip.