I'm with Travis...I would absolutely add MUCH taller accessories...replace the short vase with pure drama with ceiling high branches that would cast awesome shadows. Where the stone piece is (which is awesome) I would do an arch tall statue. I also think the lighting can be improved, which is essential in this kind of space. The dark floor perhaps is casting the wrong kind of shadowing...I'd like to see honed marble. I'd give my right arm for such a space!!!

Im not sure how much brick is seen around the window frame, if its only a little brick, you could paint it, although I'd prefer it be a smooth rendered finishor plaster like your other finished walls, because if there are three surfaces visible in there, none will be a feature, and all will look incohessive. To let the ply wall take the focus the plaster is perfect in contrast, so if absolutely necessary, pair. He brick white, although my recommendation is to gy rock and paint, just with he back wall in marine ply. Good luck, I'd love to see your finished result. By the wY, mentioned split battens to hang the ply, if you're unfamiliar, it's where timber battens are cut in half on the diagonal through section, and one half is fixed to the wall, the other the ply sheet, when they go together they become a secure locking fixing. Any handy person or tradesman will know how to do hat, without glueing or messing up the brick wall. It's quick, cheap and secure, and best of all can be removed without much effort to allow you flexibility in time.

The Bricks are OK, if you like them, keep that round feature deck in the brick and render the rest, or stone clad the feature and render the rest, or cheapest of all just paint the rest in a dark warm neutral and render the round feature in a lighter but similar tone. You have the windows to consider. If you changed the colour of them you could also change the overall colour scheme from warm to cool. Although a black and white scheme is current, it looks better on timber houses and in suburban and inner city areas in my opinion. There are lots of different elements to your house which would look more integrated if you chose a warm colour scheme with a maximum of 3 colours. You can even make the bricks work if you paint upstairs a warmer colour to match them and changed the tiles and front steps to wood. Wood integrates everything in a warm colour scheme.

Love your house and especially white houses, I guess if you live on a busy road or dusty climate it will show more dirt, along with that which comes from rain, you'll just have to think of it as more windows to clean. A good hose down with something that paint pro's would suggest every now and then would take care of any staining. Some of my favourites The most famous, just shows that white houses have been around for a very long time, ageless cheers