Hotel groups are collections of hotels that operate under a common brand or management. These groups can range from luxury chains to budget-friendly options, providing various accommodations and services to travelers. Examples of well-known hotel groups include Marriott, Hilton, and Accor, each offering a unique experience tailored to different customer needs. Many hotel groups also provide loyalty programs, allowing guests to earn points for stays, which can be redeemed for free nights or other perks. This encourages repeat business and helps build a strong relationship between the hotel group and its customers.