For the empty spot next to the Master Bath: I think a dresser with drawers should do the trick. The top can function as stylish unisex boudoir (see below) with our perfume display, some accessories and perhaps an art piece. No photographs 'cos nothing puts me off more than photographs (family) in a bedroom (!)
For the empty guest/hubz changing room: I chose this picture (above) because the wall color of our Guest Room is very close to this. I love how its made into a sitting area with orange cushions. This color combi will work really well in the room as our Guest Bath is orange.
For the boring entryway: Omg. Lovin' this Jack Pierson photograph. Perfect for the mirrored entry console paired with a silver table lamp. PS. Last Sat (for a party), I managed to spruce it up with framed wrapping paper. (pics to follow)
For the long grey wall behind the couch: I love large scale paintings and photography. I believe small spaces should have some of these in display. So am hoping in time to come, there'll be some life injected on the long grey wall behind the couch.