Lots of ideas....couldn't resist adding my two cents. i copied your photos and did a little cut and paste- it's messy, but hopefully gets the main idea across. i'd put your sofa in front of the large book case, chair by the fireplace, tv on the stand on the wall opposite the fireplace - so you can either look at the fire or the tv. Someone suggested using frames of one color for your photos - an inexpensive way to do that would be to spray paint them all a dark color-black goes with everything. Since your shelves are a medium tone wood, display things that are dark or light so that they contrast against the wood. Limiting your display items pallette to a few values usually helps to unify things. (I think that's why so many people want to paint the shelves or put inserts in the back to help your nice things read more clearly...some get lost). If you want to "splurge" -you may consider having a carpenter make a few solid tall cabinet doors to provide a visual break in the shelving. I'm showing 3 doors - 1 on the right side of the fireplace and 2 on the left to leave two open vertical shelves for display on each side - with things arranged to frame the fireplace as the focal point. To add some height to your big vases, consider stacking some books beneath them. Enjoy experimenting untill you get something you're happy with - good luck!

It looks like the space could really benefit from some modernisation. Possibly cream/white units to get away from the heavy feel of the wood. That will really freshen it up. A dark worktop to provide a contrast between the units and the floor. Look into integrated appliances as this will create a more streamlined appearance. Do away with the glazed units unless you really are a fan. Install a few under counter lights. Look at a separate hob and cooker (even if it's an under counter double oven) again to help create a more complete feeling. Then just a fresh coat of paint and I'd say you have the makings of a totally different room.

I'd paint white the TV wall in oder to make it visually higher and to hide the white color of the door, now the dark color under lines that it is rather low and different from two main doors color and height of third one. I like brown FP wall, it works good with sofas and will attract eyes visually raising the ceiling above TV furniture. And one more thing I'd think about: the 1-st photo shows that there are too much unconnected different heights (doors, mirror, TV furniture, FP wall, ceiling). Definitely some heights are needed to be connected. I'd put lower the mirror and the shelf above FP so that the TV furniture and the mirror up lines were the same height. To bring more colors into the room as it was mentioned above I'd pick up some colors from the art work for cushions and curtains.

Beautiful bathroom! Fabulous Freestanding tub!