In every room type, there are specific fields for the price. Single use price is filled for those rates in which the base price is set for 2 people or more. Room price is the base price for what is specified in standard or alternative occupancies as "Standard". Extra bed - extra cost for each subsequent guest, up to the maximum number of people. Additional bed allows you to describe the cost of alternative additional places (folding beds, sofas, chair beds) - introduced for your convenience, rarely used.