Great work!
As Rafael (who’s interior floor material I loved) said, you can improve the materials (as soon as you’re up to the task after getting comfortable with PBR and nodes 
)
Add some normal details on the floor panels, some nice fresnel reflections to let the normal maps interact with your environment… I guess Rafael would be the right to ask questions if you get stuck in the process
The GI lighting and bed geometry really is a great base to start from, though!