What is the meaning / definition of Hotel Group in the hospitality industry?

A Hotel Group can be either a Hotel Chain or a Hotel Franchise. It means that the hotels of that particular group are under the same management and belong to the same brand of hotels. 

Similar to Chain and Franchise and in difference to independent hotels, hotels belonging to a Group have a unique market presence, a marketing unanimity and a strong brand recognition on the market.

See also:

Synonyms