Just creating an accommodation type is not enough. When you have created an accommodation type, you must also create a unit or a room in that accommodation type. This is true even if you only have one cabin for example. First you create an accommodation type describing that accommodation. Then you click “Add new unit” on the right hand screen to add a unit. If you only have one cabin for example, just call the unit “Cabin” or something similar. Once you have done this, it becomes bookable.