"Hotel photography" as I call it, could actually be what moves more people in the hospitality industry. The word of mouth still does the job in a personal way. People still believe and tend to feel more secure when someone (even though they don't know them) say something great about a place they visited. The internet changed this a lot in the last few years.
Images is what it is all about. Particularly good images. Good images sell. They sell food, they sell cars, they sell houses, trips and vacations. Good images move people from one point to another. This "moving" generates many businesses. Air tickets, cabs, airports, food courts, cruises, wedding venues, hotels, resorts, restaurants, etc., etc., all generate money from this moving action.
A hotel image is the first thing people see of their destination before arriving. The clear clean blue water of the beach they are going to stay really does create a sense of wanting to be there. The sunset overlooking your room terrace. The clean and perfectly made bed with a great view of a lonely ocean. All of these images do make someone what to be there.
A hotel photographer, specially one who has actually studied hotel management, is probably the best professional for this unique kind of photography.