| Composite | Indicates that the room type contains multiple rooms sold as a single unit. |
| Language | Identifies the language in which the guest room information is being sent. |
| MaxAdultOccupancy | Maximum number of adults allowed in a room type. |
| MaxChildOccupancy | Maximum number of children allowed in a room type. |
| MaxOccupancy | Maximum number of guests allowed in a room type. |
| MinOccupancy | Minimum number of guests allowed in a room type. |
| NonsmokingQuantity | This attribute is used to designate the number of non-smoking rooms by room type. |
| Quality | Indicates the quality of the room within a hotel such as an "S1K" as a superior room with one king bed. |
| RoomTypeName | The room type name. |
| Sort | Used to define the display order. |
| Code | Any code used to specify an item, for example, type of traveler, service code, room amenity, etc. |
| CodeContext | Identifies the source authority for the code. |
| Quantity | Used to define the quantity for an associated element or attribute. |
| URI | Identifies the location of the code table. |
| ID | A unique identifying value assigned by the creating system. The ID attribute may be used to reference a primary-key value within a database or in a particular implementation. |