Depends on height of the ceiling,and size of your room. ceilings up to 2700 tile to ceiling ( replace ceiling, it is not a good look new bathroom with old ceiling, unless featured ceiling, you need to remove cornice, Tile all walls to ceiling, add new cornice for professional look ) Have you thought of feature wall behind basins, same as floor tiles ?

Hi Sofia I definitely think brick lay would work better on the walls in the bathroom purely because you have a 30x30 on the floor and a 30x60 on the wall. You will find the tiles could look out of place trying to stack them. It would be a different matter if they did not share 1 or more dimension. Perhaps in the ensuite, consider doing something like this: [https://www.houzz.com.au/photos/what-architecture-beirutful-house-eclectic-patio-london-phvw-vp~14310278[(https://www.houzz.com.au/photos/what-architecture-beirutful-house-eclectic-patio-london-phvw-vp~14310278) Tile the floor and half way up the back wall with the "floor tiles", perhaps a tile or 2 above the vanity unit and then continue with the white tiles to the ceiling. You could hang your mirror so it covered about 1/4 of the "floor tile" and 3/4 of the white above the centre of the sink. In the main bathroom consider something like this: [https://www.houzz.com.au/photos/victorian-dream-bathroom-victorian-bathroom-london-phvw-vp~39122647[(https://www.houzz.com.au/photos/victorian-dream-bathroom-victorian-bathroom-london-phvw-vp~39122647) Tiling the back wall to the shower in the "floor tile" to the ceiling with the white tiles behind the loo to the ceiling. Alternatively, tiling the entire back wall with the "floor tiles". The first option may make the bathroom feel smaller if the shower takes up more than 1/3 of the back wall. Doing the two different options would give the bathrooms continuity, but also some individuality. I hope this helps. Look forward to perhaps seeing the outcome. James

Are you tiling the shower base? If so the larger the tile then the more cut tiles will be needed to get the drainage right to direct water to the floor waste. If it is a small bathroom make sure that your tiler aligns the grout lines on the floor with the grout lines on the wall. If they are slightly offset they look pretty bad. Would you consider using the same 300x600 tile on the floor and wall? If so then lay the tiles horizontally, not vertically. However with any good tiling job the better, flatter and straighter the wall is before tiling will result in a better result. Don't expect your tiler to make a perfect job if the walls are not perfect before they start! Best of luck Dr Retro of Dr Retro House Calls and Dr Retro Virtual Visits

I really like that floor. I hope you are able to keep it once the complexities of waterproofing are revealed. Really large tiles would not be era appropriate. And they were moving away from subway tiles by then. Perhaps 20-25cm square in running bond for that decade? Colour will be easier to pick when the green is gone. I think bright whites could be useful accents but were not really available back then, except whitewash. So depends on how true to the age you want to be or if you’d prefer to have your own blend of the best of two eras.