It will be a very tight fit, but if you purchase a prefabricated - very small shower - it might work. The shower would have to be 36" wide with a corner entry, but I don't know how much room you have next to the toilet......? It's tight. so I am not sure about the width of the shower. You will have to measure the space. The stacking washer and dryer would be freestanding next to the shower at 24" wide. I agree that it would be better to have a tight bathroom and have more room in the kitchen.

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 am trying to source (in New Zealand) a shower tray which will fit into my alcove Sized 1900x1000 for the shower. Thus far for that size (and I have searched online and in merchants) found only tiled over solution to completely cover floor space. Not totally happy to have this as feel that tiles will be slippery when wet. Whereas have found smaller acrylic trays that are described as non slip even tho they are smooth. Can anyone suggest a supplier that they have used for trays and hinged/pivot doors of the size I require? Or if place a shorter acrylic tray to the length (probably 1200mm) of the glass wall, as will create a walkin with what do I cover the remaining 700mm of the alcove floor? The bathroom floor will not be any kind of tile, more likely to be a textured vinyl plank.

Live in NZ near Christchurch. Am trying to find an alternative to tile as a wall covering on the walls OUTSIDE of the shower areas. These are already acrylic as did not want to clean grout lines. Has anyone used any of the panel products on the market for covering the whole room? Has anyone found any to replicate LARGE tiles. James Hardie has hardiglaze but the tiles are small . I really like T&G panelling, again seen A Hardie product but would like a narrower width tongue. Also I think up to ceiling will be a bit much........pHowever what height to end it? Are there less ornate dado rails available? The house is a new build and the fittings are contemporary. TIA for helping.