While most hotels in the US and Europe charge per room rather than per person, single travelers often face what is known as a "Single Supplement." This is most common in resort packages, cruises, and older European hotels where rooms are categorized as "Single" or "Double." A single person may pay 70% to 100% of the cost of a double room because the hotel's operating costs (cleaning, electricity, and taxes) remain largely the same whether one or two people occupy the space. Some luxury 5-star hotels keep a minimum "double bed" standard and will charge the full room rate regardless of occupancy. Conversely, in Japan and parts of the UK, you can find dedicated "Single Rooms" with a twin bed that are priced significantly lower than doubles. In 2026, the industry is seeing a trend toward "solo-friendly" travel, with some cruise lines and tour operators waiving the single supplement during off-peak periods to attract the growing market of independent travelers.