A hotel is an establishment that provides paid lodging, usually on a short-term basis. The provision of basic accommodation, in times past, consisting only of a room with a bed, a cupboard, a small table and a washstand has largely been replaced by rooms with modern facilities, including en-suite bathrooms and air conditioning or climate control. Additional common features found in hotel rooms are a telephone, an alarm clock, a television, and Internet connectivity; snack foods and drinks may be supplied in a mini-bar, and facilities for making hot drinks. Larger hotels may provide a number of additional guest facilities such as a restaurant, a swimming pool or childcare, and have conference and social function services. Some hotels offer meals as part of a room and board arrangement. In the United Kingdom, a hotel is required by law to serve food and drinks to all guests within certain stated hours; to avoid this requirement it is not uncommon to come across private hotels which are not subject to this requirement. In Japan, capsule hotels provide a minimized amount of room space and shared facilities. In Australia and Canada, hotel may also refer to a pub or bar. In India, the word may also refer to a restaurant since the best restaurants were always situated next to a good hotel.
The cost and quality of hotels are usually indicative of the range and type of services available. Due to the enormous increase in tourism worldwide during the last decades of the 20th century, standards, especially those of smaller establishments, have improved considerably. For the sake of greater comparability, rating systems have been introduced, with the one to five stars classification being most common and with higher star ratings indicating more luxury. Hotels are independently assessed in traditional systems and these rely heavily on the facilities provided. Some consider this disadvantageous to smaller hotels whose quality of accommodation could fall into one class but the lack of an item such as an elevator would prevent it from reaching a higher categorization. In some countries, there is an official body with standard criteria for classifying hotels, but in many others there is none. There have been attempts at unifying the classification system so that it becomes an internationally recognized and reliable standard but large differences exist in the quality of the accommodation and the food within one category of hotel, sometimes even in the same country. The American Automobile Association (AAA) and their affiliated bodies use diamonds instead of stars to express hotel and restaurant ratings levels.