Hi there, yes, a bit of an issue. Was a height specified on a design somewhere, or has the fitter arbitrarily decided on the height? We would normally leave this as an "on site" decision for the fitter to consult the client and agree a height prior to creating/modifying boxing & structure to suit. That should have happened quite early in the build in the case of recessed cabinets. As Sarah correctly indicates, there is no "standard" height and normally there is quite a bit of flexibility, unless you have runs of furniture which include tall units which may set an "upper edge" limit. You don't have this, so now you have a dilemma. While there is no absolute way to determine a "correct" height, as a rough rule of thumb we would get the tallest & shortest adult using the bathroom and measure "floor to eye" height of both, then pick the midpoint between these two heights as the rough centreline for the mirror, then tweak to taste. My gut says yours is slightly higher than optimal, especially given room height. As to what to do - reworking it now is a not insignificant undertaking, as you would need to remove a couple of rows of tiles (to one tile each side of the opening), recut the board, possibly add in some additional noggins, possibly tweak the electrics (if it has been left with insufficient float), then recut and retile the "awkward" bit. Any fitter is going to strenuously resist doing that at this late stage! If he is accurate to drawing, then it would be reasonable for them to expect you to pay for the privilege of such a change. If the design shows the mirror lower, you have a case to tell them to put it right. But expect resistance! If there is no design and you have not been clear that you wish to be involved in setting the height, then you're into a grey "he says, she says" situation, and have to decide how far you want to try and push it. Best of luck!

Thank you both @Sonia and @minnie101 for the feedback, I really appreciate it. I have guests over once a month for around 3 nights. I have hooks behind the door for hanging and also bedside tables with draws. I think I also prefer the dressing table option, I guess stool could be a good option instead of a chair. If I have a dressing table with a mirror can I still hang a full length mirror near it on the same wall or would it look odd?

It depends on cost, how long you are going to be in your house, cleaning, and preferences. White is always the least contentious and easy to sell on in future. I do like the wood effect though, I cannot see many people disapproving of that. Its a really good contrast to your floor tiles. If you have hard water and no water softener I would rethink that black tap.

Are you removing the current basin? You have spent all the money on a bottle trap to be exposed and if it was going in a vanity you could have just had standard white pvc fittings.