When using the Room Block Document Element, you have the ability to choose whether to show single/double/triple/quad Blocks.

If there's a specific Room type/s not appearing, it may be due to there being a Block in place that has not been selected on the document element.

In the below example, my Hillside Room has blocks for Triple Occupancy

However, it is not appearing in my document:

This is because I have not selected Triple occupancy in my Document Element:

I will need to ensure Triple is also selected in the Room Block document element in order for it to appear: