The white tiles you have photoed look like they are glossy. I would go with a textured rectified porcelain tile & use the same tile throughout the whole bath. I would do them around the loo & above the sink. Not fond of a glass door for the bath myself. Makes it too hard to clean. Do all tiles the same.

Are you keeping the existing floor tile? I am not wild about the white and off white tile together. Are you sure you like that look? Is there a reason you are not going all one color?

removing the existing floor tile. wanted to create some interest / bling instead of a boring listello tile, but I agree.. not so sure about the 2 new versions of white. the designer tiles come in beige too, but it still won't match the new porcelain floor and wall tiles. was thinking though that breaking up the shades may be fine with the silver strip between them to create that visual break?

better beige example, but I'm thinking lighter than the off-white plain polished porcelain tile would make sense since the rest of the bathroom is white

I think maybe if there were a bigger difference between the white and the other color. Maybe gray with the decorative white tile?

Wall hung toilets are space savers but what happens if they have a problem? do you have to rip out tile to fix the flapper?
if two boys will by sharing the bath get as much vanity and storage as you can.
A glass door is a major pain when bathing rowdy little boys. A curved shower curtain rod will give more room.
be sure the floor tile is not slick with a glossy glaze.
you have a nice sleek design , just keep practical for those boys.

I opted not to get wall hung toilet for a 4x8 BR that I am adding a shower too. I chose to go with the Kohler compact 1-piece elongated toilet instead

I'd advise against a white tile floor; they are very high maintenance. Every strand of hair that lands on the floor is very visible and so you need to sweep the floor every time you towel-dry, blow-dry, or comb your hair. A gray mosaic tile floor (with plenty of color / shade variation) will be much easier to keep looking clean.

The tile with the design is nice, but I think it will look dated pretty soon..I would go with something simple like a porcelain tile that looks like limestone in a beige color (the one you posted above with the same curly design, in beige, is warmer than the black and white). If you want the black/white contrast, then go with that, but I would not use the curly design.
Here is an idea that might help you. It's a small bathroom that is pretty well organized

That vanity is nowhere near large enough for 2 growing boys. I'd put in a swinging door, narrower doorway, and run that vanity to the wall.

And 2 boys growing up with that girly, swirly white tile? Why? You know exactly who will be using that bathroom, but you're ignoring them. The future of the room is clear, run with it.

That slick floor tile is an accident (or 10) waiting to happen.

And you cannot cut the tiles in half and get a factory finish on that edge. The two halves will not be square (because of the width of the saw line), the cuts will show on every grout line, and you'll be back here in 6 months crying about the bad tile job, like others do.

You start right off complaining about the cost, yet you pile on extra-cost options with increased labor costs. You want a feature wall. A 'feature wall'! Do you really not understand what people do in a bathroom? It ain't an art gallery.

I'd rein in the designerness and do the best, most serviceable job you can do for the 2 boys who will grow up with it.

@tatts, if you want to give her advice, you can say that in a nice and polite way. You seem to be very abrasive in your posts (I've seen several of your replies).

You can't keep the tub or the window if you want to convert this to a tub shower. A tub for a tub shower must have an integral tile flange in order to be fully waterproof. You can't make THAT tub or THAT window work at all with your plans. And you will need to relocate plumbing in the walls to convert to a tub shower as well as replace the tub.

A window in a shower is an open invitation to mold and rot behind the walls. If you want a window in a shower, it needs to be replaced with a vinyl or fiberglass model with tempered glass. And then you need an expert to integrate the waterproofing membrane behind the tile with the window. That means exterior work as well as interior work.

I'm with tatts on this. None of your ideas are physically practical or work with a limited budget redo. You're planning a 50K bath here with all of the labor needed to move everything around and change it. Houzz is not the place to get inspiration for a budget anything.

Keep the same fixture location and function and just replace the finishes. That won't be cheap either. That alone will average 16K.

Sophie, you tend to throw large numbers whenever any renovations is being done..keeping everything as is and just changing the finishes will be 16K? I am having a bathroom in the basement done and the costs are nowhere near that..Sure, if I were to go with an expensive tile, the tile alone would have been a few thousands. It's ok to give the heads up to whoever is asking, but don't scare them.

thanks for the honest opinions everyone.. will post some pics here after it's done. incidentally, the building rules and regulations, etc. in south africa are very different from that in the usa.. it's actually a bonus to have a working window in a bathroom.

and these are the taps we're going to be using, along with the vanity

I would def. go for the white curly tile ( Porcelanosa Saigon Blanco)

they have a very big range of tiles that would be contrasting to that tile so have fun planning...

ok, so it's done, and tatts and sophie can kiss.. well, let me not go into detail.

and thanks to printesa for being a kinder voice of reason.

a summary of the pics below and work done:

1. I love my tiler and the way the tiles turned out.. he's amazing at doing cuts (yes, every tile you see was once part of a 600x600 tile)

2. we replaced the old problem steel windows with energy efficient aluminium windows

3. used the same porcelain tiles on the walls and floor, in full size 600x600 on the floor and cut to be 300x600 on the walls (and a smaller width but the same 300 height in some places). A simple bath mat sorts out any worries of slipping.

4. we installed a wall-hung geberit loo and actuator

5. replaced bath mixer with bath spout, diverter mixer and overhead eco shower head. we still need to get a frameless folding shower screen eventually.. the non-folding ones make the diverter mixer hard to reach if you're not in the bath.. a no-no when you have kids in the bath/shower

6. didn't use the curly designer tiles.. the tiler advised against it due to the stark contrast.. used mosaics running up the shower section instead

7. installed a larger 1m vanity

8. installed 4 x l.e.d. downlights (about 4w x 4 bulbs = 16w total)

The bathroom looks lovely! I like the tile and I think the entire room looks modern and clean.