Hotel Association of New York City represents more than 280 of the finest hotels in NYC with more than 80,000 rooms. The Hotel Association of New York City is one of the oldest professional trade associations in the n serving the hotel industry since 1878, the hotel association of new york city, inc. is one of the oldest professional trade associations in the nation. its founders mission was to establish an association that would serve as the voice of the hotel industry, supporting its members with the highest standard of services and best available resources.