Which marketing strategy involves selling several products together, such as room upgrades and amenities?

The marketing strategy that involves selling several products together, such as room upgrades and amenities, is best described by the term packaging. Packaging refers to the practice of grouping related products or services to create a single offering, usually at a perceived discount or added value. In the hotel and lodging context, this could mean offering a package that includes a night's stay, breakfast, and access to hotel amenities, or bundling room upgrades with complimentary services like late checkout or spa credits. This method not only enhances the guest's experience by offering a more comprehensive solution but can also drive higher sales and increase overall revenue for the hotel.

Bundling, while similar, primarily focuses on combining two or more products or services into a single offering with a single price, which might not convey the same comprehensive strategy that packaging implies in a hotel context. Cross-selling is about promoting complementary goods to persuade a customer to purchase additional items that complement their primary purchase. Upselling refers specifically to encouraging customers to purchase a more expensive item or upgrade than they originally intended. Understanding these distinctions clarifies why packaging is the most appropriate term for the strategy described in the question.