Hotels can be classified in various ways, including by ownership, size, location, amenities, and star rating. Ownership models include independently owned, owned by a chain, franchised, or under management contracts. Hotels are also classified based on their size in number of rooms, location such as airport or commercial areas, and level of amenities like luxury features or casinos. Star ratings indicate quality and service levels, with 5 stars having the highest level of accommodations and services. Other categories include heritage hotels converted from historic buildings.