That's a lot better already!

"The problem is that the house is not modular so it has to load and render all of it for just a room."
Actually anything that is out of site is ignored for renders, excpt for stuff that might cause shadows (and possibly reflections if using raytracing).

What type light are you using for the fill-in? To me it looks like you're using a point-light, placed just above the bed and just back (ie closer to the viewer) from the newspaper.

Suggestion:
If so, try using 2 fill-in lights (the render time will increase but not by much).
Create a new point light and place it where a ceiling bulb would be. This is the one that should cast shadows.
Reduce the intensity of the one "on the bed". In fact, whilst setting up the new light, I'd recommend turning the "bed" light off altogether and only turning it back on after you've got the shadow-casting one set up properly..

For adjusting the shadows, use the Properties tab in the Light Parameters dialogue. There you can play around with the "Shadow Blur Radius" (higher values = more blur). (This dialogue is also where you can enable/disable individual lights, without actually deleting them, and/or choose whether the light should be raytraced or depth mapped (=shadow-mapped).
In the other (Parameters) tab of the same dialogue, you can also play around with the shadow's map size. Increasing this will give you better, more accurate shadows, at the expense of memory cost and render time. Also here the shadow dial allows you to control the shadow strength. shadow of 0 = no shadows, shadow of 100 = fully black shadows. I'd suggest setting that to 75 as a start point...

Hope that helps

Cheers,
Diolma