It really comes down to how many clothes you have and how much space you need to store them, along with where you prefer to get dressed and how you use your ensuite - obviously no point having double sink if you never share the bathroom, but if you're brushing your teeth while the other half is doing their thing in the next sink then this bigger ensuite might work better for you. It all depends on how you want to live, how much stuff you have and where you want to store it. I've created a checklist that helps with a lot of the foundational decision making that you need to make when you're planning a redesign project, so you might find this useful. You can get it plus a few guidance emails here: https://bit.ly/2P1quQ6 Hope this helps, Jane, i-architect.co.uk

Following with interest! I have something similar that needs renovating, but in an apartment, and no window - around 3500x1200. Personally, I wouldn't swap the loo and shower (I always prefer a loo to be near a window (!) and wouldn't lose a window ie valuable ventilation for the sake of a slightly bigger shower, but obviously it depends what's important to you). Maybe half tiling the non-shower areas is an option? The bathroom fitter may have clever solutions for fitting the right size tray into that width. Good luck!

Is option 1 the existing lay out?

Here is some inspiration. Texture rather than colour is good when wanting to create interest, kitkat tiles are beautiful and very in keeping with the aesthetic you may want to create.