You have a lot of great features included that aren't replicated in modern houses due to costs. The semi circular stairs, thats wow right there! ^^petapea is spot on by the way! I'm currently working on plans for a house that was rendered in 2006. It has the wow factor; WOW that's bland as bat sh!t.... We're adding things like a bay window, new porch in painted timber and some masonry back to make it look good again. Then the new landscaping will really lift it! You could render garage facade and paint it, pressure clean the rest and do those maintenance jobs like cracked flooring, leaking gutters etc. The stairs are too narrow to be any use so widen them up to 1000-1200 wide. I'd spend more on landscaping (which includes fences/letter box/etc).

There certainly can be legitimate functional reasons/purpose for basins to be required set appropriately in relation to the wall to suit the selected wall spout setup, and having experience with similar details the spout length chosen can determine the basin position and does need to be a certain length to work properly. Sometimes this requires adjustment of basin size and bench depth. In this case something's clearly happened.....without understanding the company's particular processes my guess is that the bench depth larger than what it should be. It's your home/investment, you have to live with it long term. IMO what differentiates (great from ordinary) builders is their capacity to resolve issues and shoulder responsibility when something like this occurs. Believe me they (should) have enough fat built in the profit margins to resolve these types of issues. The good news is you actually have a physical example you can refer to in the company's display home. If required go and measure it and compare it to yours to be 100% sure - in custom/boutique situations clients don't have that luxury/back-up check. Try not to play or get drawn into a "blame" game, or accept lame excuses (which the industry is expert in ;) ), it doesn't matter exactly how it went wrong, the main thing is you want to get it right/resolved. Stick to your guns ;)

I agree with all the comments about back rests and white stools getting dirty easily. My friend was devastated when her guest sat on her brand new white chair with jeans and the indigo dye from her jeans stained the chair forever. I’d also be wary that the white you choose for your stool blends with the white of your kitchen. From memory, your kitchen and bench tops are a warm white. The stark white of those stools could be jarring to the eye. Just saying....

looks wrong as it is currently - IMO it would look way better centred in height between ceiling and vanity and also possibly better centred to the basin, since it's offset to the vanity - a mirror centred to the vanity but offset to the basin could look odd - but it's hard to judge accurately from those photos as it's hard to gauge the scale of all the various elements.............like with everything to do with design it's always about balance