This isn't too much of a critique for you, but I ran across this a few days ago while doing some research into UE4 ArchViz stuff for myself and it may help you a bit. https://forums.unrealengine.com/showthread.php?28163-ArchViz-Lighting Koola has a example of his work that you can download from the marketplace. The basics…
I think your furniture's proportions could use a little tweaking as well. Currently the furniture appears a bit too elongated or stretched out horizontally. The bed seams massive compared to the doors, and the doors themselves seem a touch too wide/not enough height. Then again, I might be getting this feeling of the…