I think we are going to use the white subway tile to keep the budget down as I priced new tiles and it would blow out the budget. Really like the contrast grout idea to add a bit of texture and pattern. My partner is a builder and he loves the reclaimed wood shelf idea as we have a lot of spear old wood left over from the renovation. We have made a dinning table and fire place mantel from it already so it would tie in really well.

Could you put the laundry behind doors so that you won't see it with the walk through...by the way...I am just over the water in OZ, know what you mean by costs... will get some pics....this would be my option...just going on what you are saying.... The good thing about this is that you can shut the laundry away except for when you are washing...... I would have the washer with the dryer next to it if you can and put a bench over the top of the both of them....for this it is worth getting a front loader if you haven't already got one.. this will avoid the bench on the other side...it can all be contained and done on the one side of the laundry. Don't go for sliding doors ...the glass look great but they will need a bottom track and if they don't have one...they will move a lot....not great for this even though they look great. As for having the bench over the top of the washer and dryer, you can then have overhead shelving, does not need to be cupboards as the bifolds will hide what is in there...double cost other wise. hope this helps...Robyn

Third vote for getting a professional involved, but i'll still offer my layman's suggestion given that you're just soliciting general ideas at this point. If it was my space, I'd switch the bathroom and the laundry room around, keeping just one of the walls currently enclosing the toilet. Its hard to estimate precise measurements from the drawing, so it may not be feasible, but here's what i mean

I agree you probably need to centre the vanity and the cabinet on the wall or they could look a bit odd! You don't say why you don't want a space between the window and the vanity - just my opinion, but I would think 300mm could be quite useful for a bin, a clothes basket or box, or a small stool for putting clothes on? The only alternative to leaving a space, is to fill it with something as the response above suggested. To avoid it interfering with the window, you could make this something lower, so it sits level with the top of the vanity. This could be built in and the wall lining put over it to create a single "shelf" level with the underside of the vanity top, or if you can find some freestanding open shelving of the correct width, which could also be cut to the correct height, you could wedge that between the wall and the vanity side when fitting the vanity. Just bear in mind also, that you'll lose some of your towel hanging space if you put something too high in the space.