I think they look really good! I imagine your boss wanted a clean looking image, but as you say a bit more of contrast between the foreground of the image and the background would help. You could have “burn” more the background as in real interior photography it usually happens that way.
One quick trick I usually do is to make the light areas warm and the shadow ones cold. The other way around also works, but if you leave the tones of your image untouched, they usually look plain.
I have taken the liberty to do a quick mock-up of the first image to explain a bit further. I know it doesn’t looks amazing as I have burn it too much, but bear in mind I have used 5 minutes to retouch it.
I just made the mid tones warm and the shadow tones bluish with a color balance adjustment, painted some “dodge” light in the windows, painted some shadows as a vignette with the round brush in a normal layer, applied a selective color layer affecting only the neutrals and used some curves to give a bit more contrast.
The second image needs more samples and the wooden texture tiling is too repetitive.
If you put someone in the scene (a girl sitting on the bed, for example) you will also give a better sense of scale.