assuming that this bathroom is upstairs i've tried to keep the plumbing close to original positions and only moved one wall to allow for a built in mirrored wall cabinet and generous vanity with drawers (NB a longer bath or deeper vanity will make the standing space subject to falling backwards into the bath!!) ...pushing this toilet cubicle further into the roof space would make more space for a bigger bath and there would also be enough space to have the entry to this shower at the narrow end and make the shower up 1800 x 900) but that would mean the end wall would begin to be uncomfortably low at only 1400mm

Moving the niche is not an option at this point. But I do have a question about the niche. My tile installer wants me to consider using the gray tile (same as the floor) on the inside edges of the niche. This is because the wall tile is glass and imperfections in the glass (from cutting it) will show if the glass tile is on the inside edge. How do you guys think that would look? I tried to find photos of a niche where the wall and back of the niche were one color, with the sides being a second color and I couldn't find any examples. Has anyone seen that?

Update... studied the temperature as I turned on hot water throughout the house

This is a gorgeous reno, my favourite this year.