A mirrored splash back is nowhere more appropriate than in a room with a view. The maintenance of a mirrored splash back is one of the easiest, as with glass, no grout lines, and a simple wipe over with glass cleaner, metho is my choice, will always have it sparkling. Mirror will reflect any marks you've missed, so cleanliness is next to godliness. Also toughened mirror has a slightly distorted reflection, so I doesn't actually look as clean as a standard mirror. Aluminum will have the same pros, but the cons are fingerprints, as steel is more difficult than glass to master cleaning without streaks, and cleaning products are more specific. If go glass/mirror for this reason.

Thank you everyone, your thoughtful advice was very welcome. I'm attaching a photo as its all finished. I selected Olive Reserve for the splash back and painted the wall above it the same colour. As its a big room with lots of light and a large window it doesn't dominate. The glass is so easy to keep clean and I love the way it reflects the garden and light. Have to say though some people are stunned into silence when they see it, but as the cupboards and bench tops are quite bland I knew something bright was needed

A photo tells a hundred words. I figured out the Dulux.

Hi Rach163 So the splashback is along the wall behind the stove? And is full height to the ceiling? No overhead cabinets there? Certainly for an all-white kitchen, and a very small wood-element on the table, I'd suggest a feature colour splashback. There's a few ways you could make it pop - a colour such as a rich red, or a striking (but not bright) green, or even a blue would work well. We used colour-backed glass for our splashback in our all-white (but dark benchtop) kitchen, which is low maintenance and looks very "rich". It's a red (burgundy?) feature "wall" below overhead cabinets on two sides of our mostly L-shaped kitchen, and we also put it under the island bench/table, to tie the two together. The other idea that struck me is that you have a view to the outside (albeit a covered courtyard dining area now?). That made me think of a mirror to reflect the view, or at least the light - so something like a polished stainless steel. Perhaps in sections or strips with brushed steel, to reduce maintenance :-) For the lighting, we used an led strip under our overhead cabinets, either side of the range-hood, and around the corner to where our sink is. You could do something similar with a narrow aluminium channel either at the ceiling (probably too high) or at range-hood level with an led strip (a waterproof one!) inside it. It's nearly invisible when not on, just a crisp brushed/polished metal line, but gives a really bright uniform light across the whole bench area, and no shading issues with the main room lights behind you. If you wanted real wow, get a multi-colour led strip that can be colour changed (and be dimmed) to suit your needs and moods. And if you wanted to freak people out, you can get a multi-colour programmable led strip that can also do things like active lightwaves, pulsing and respond to music and a bunch of other things :-) All of the strips are dirt cheap, unless you buy them through most Australian lighting stores :-/ We also put a dimmer led strip underneath our island benchtop, to pick up the splashback/underbench colour, and as a nice 'night-light' of an evening. Works really nicely. I've seen some people do it at the kickboard level (i.e. 140mm above the floor), to make it look like everything is floating, but I've found that only works for some kitchens. One of the benefits of controllable coloured led lighting can be that the splashback can also be white or silver, and it's the lighting that determines the perceived colour. Leds are quite directional though, great for benches but less for wider room lighting, unless you have them in a diffuser. We use led lightbulbs in four high ceiling fixtures, and one long-drop over-dining-bench light, since they are lovely and bright and warm (if chosen that way), and as the ambient light source. You can also get colour/controllable led lightbulbs but $$$. You want to think about where you want feature lighting (up or down), work lighting and ambient lighting. Think about where you will stand to work, and which lights you will be shading, which will be shining in your face, and which will actually help. We pushed around our lighting points on the design, and even over-catered on the number of fixtures, just in case we missed something. You can always disconnect a light and cover it trivially, but putting one in later or shifting one is a bit messy. Anyway, my two bits. :-) Cheers, Markus