Colorbond visualiser. http://colorbond.autech.com.au/onlinevisualiser/index.php?frame=residential

Hi MaxCC, Your 'artwork' is called a wall niche. As far as I know, they were originally used to display religious icons, such as The Virgin Mary. I'm not religious but I do admit that I have a special love for wall niches. I have used them twice in homes that I've built as a place to display my 'Lamplighter' Lladro, so that he is on display to guest. The niches were always placed just inside the front entrance as yours is. Sadly I don't have any photos to show you, as we have just moved house and everything is still in storage. My suggestion, to help you with how to display the object that you will put into your niche, would be to keep the wall itself neutral but paint the niche in a metallic paint. Your want the object on display to be the item of greatest interest and the metallic paint [Resene have some wonderful colours to chose from] will help to draw your eye to that space.

Given your cupboards are Lexicon I’d stick with that either in half or full strength.

the space next to the guest toilet is for storage (vacuum, broom etc and to make MILs bedroom more private) but whatever you decide the stairs must be central to give the best use of the space upstairs and down otherwise the living areas both become crowded walkways and to make for the better location for the central stairs probably means gutting the front porch and entry to allow enough space for the new front door and moving the stairs towards the front allows for more space for the kitchen island with stools... but, in order to fit with the upstairs hallway the highest part of the stairs needs to be on the garage side ( so no option to use as a study) but the narrow storage under the stairs (subject to necessary structural restrictions) could be potentially expanded into the garage for a pantry and you could use the original downstairs kitchen as a small study and entry foyer