You can use myCADtools and the BatchConverter or SheetMetalManufacturing tools that allow you to automate its tasks from the active assembly and name your DXFs based on the properties of your documents.
If you don't have myCADTools, a macro could do the job. The save as function in SolidWorks provides various options for exporting to DWG. What exactly do you expect for each room: the default view when it is opened, a particular view, or several, from the 3D model or from a drawing...?
It has to do the job requested, i.e. since an assembly exports all the sheet metal works in dwg.
I haven't tested it since I use Mycadtools for this need via Integration, but if the site is in English, the macros available on this site are really very functional.
In addition, you will find a lot of other very interesting macros, or even something to train you in vba like I did.