Parent / Child Page Transformation

I have a custom page type called a Collection. The collection has fields for Collection Name, Brand, and description. I have another custom page type called Floor. The Floor contains data like color name, FloorType, SellingStyle, SellingColor etc… On the front end I have a page for each collection. Each collection can have child pages for each floor. Problem: I need to display all of the collections with the list of floors per each collections.. Can I do this using a repeater or do I need to use VS to create a custom control (presentation and query data) to query the parent with the child page data for presentation? I am sure I can do this quickly using ascx (did it already), but how do I create this within Kentico 8.x without dropping into Visual Studio.. Looking for documentation, blog post or guide on advance parent / child transformation. Thanks David