Nice interiors, I think these could really use some more post production to bring out contrast and saturation. Check the histogram of the image and try to adjust it using levels so the histogram starts at the very left and right = good contrast. Also a few of the materials are too diffuse, need a bit of reflectance in my opinion. Most materials are more reflective than we think.
Kind of like this, of course working with a 16bit image is better.