Hotels can be classified in several ways, including by target market, level of service, ownership/affiliation, location, and size/number of rooms. Some of the main categories for target market are business hotels, airport hotels, resort hotels, and conference/convention centers. For level of service, there are world-class, mid-range, and economy/limited service levels. Ownership/affiliation classifications include independent hotels, chain hotels, timeshares, condominiums, and management contracts. Location types involve city downtown/commercial hotels, suburban hotels, motels, and heritage/boutique hotels. Size is categorized as small, average, above average, and large hotels based on number of rooms.