During the last 2 decades, hotels spas have been conceived and built as amenities to the hotel to boost the stay length of the guests.  Today, hotel executives realize that the gain in average stay does not offset the cost of building and maintaining such huge and expensive amenities.  The next challenge of the hotels will be to redesign these “spa dinosaurs” with proper floor plans and traffic flow, to support the spa operations and revenues, including spa retail sales while preserving the clients experience.