White subway tile! Pretty kitchen!

With so many white surfaces, I'd do something with a little color and pattern. Pick colors from your adjoining rooms, from the rug or just a color you like.

You already have a backsplash, that 4” piece of countertop that runs vertically on the wall. If you’re keeping that, you’re done, but you can always paint the wall. If you’re getting rid of it, consider a glazed ceramic tile in a light gray that coordinates with your veining.

No mosaics, no glass tiles. You have a classic space and a beautiful counter, be true to your materials.

It's hard to see due to the distance and items on the counter, but it looks like you have a 4" curb of your counter top material only on the wall with the stove, correct? That is a backsplash and you don't want to put another one on top of it. Personally, though, I'm not a fan of those 4" curbs, and I would want a full tile splash all the way around, under all of the upper cabinets.

If you decide to have the curb removed so you can install something else, white or grey porcelain subways would be a safe choice. Stick with materials other than stone so the splash doesn't compete with your lovely countertop.

do all white with an insert of a contrasting theme above range. that is your counterpoint to the interesting open end of counter with seating. You need that element and the square inches available above range gives the perfect set up. Inserting a thin pencil tile horizontally in the long wall areas might also be great if it coordinates well as you have a horizontal movement visually in your kitchen .

Huh, that's funny. I thought 'glass' off the bat. Your space reads more eclectic or contemporary to me and the shape of your counters and your fixture, would lead me to at least experiment with tile shape, material or color. Your counter material is lovely but in this kitchen, I wouldn't feel constrained by it to white subway at all. It's almost a neutral given your other elements, I think. I wouldn't go crazy modern but something with a softer shape and/or appearance than rectangles. This is from tilebar.

You didn't ask so forgive me for suggesting that you replace your mini blinds and get nice roman shades for your windows before anything else. That might even start a color pathway for any backsplash you install.

I second white subway tile and a mosaic over the stove.

I really like the ideas. I have been leaning toward white subway and mosaic over the stove also. Any ideas on mosaic?

Ps. I meant to thank everyone for help. It is helping enormously. Please stick with me—-

OK, I don't like the tile I posted and wish I'd been more precise. You're not going to go wrong with white subway, but if you wanted permission to walk a little bit on the wilder side, I think your kitchen could pull it off.

What I was trying to suggest was a shape idea, like this perhaps.

I disagree about using a traditionally laid herringbone accent, especially with a thick border. I would think it was too stodgy if this were my little kitchen, (except maybe the sideways pattern in eam's first two examples.) If you want an accent and use subway, you could also consider a stack or a chevron pattern. Here they use that pattern for the whole backsplash.

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Or do the BS in matte tile and the accent tile in a gloss finish. Or lean a large, funky handmade ceramic plate behind your range and support a starving artist.

Your kitchen is darling. You didn't ask but I'd paint the stools. I'm just full of good ideas for your time and money, aren't I?

Your space reads more eclectic or contemporary to me and the shape of
your counters and your fixture, would lead me to at least experiment
with tile shape, material or color. Your counter material is lovely but in this kitchen, I wouldn't feel constrained by it to white subway at all. It's almost a neutral given
your other elements, I think.

I agree, barncatz. I think the same can be said about the cabinets--they are traditional but can be thought of as a neutral. The flowing shape of the counter and the glass pendant makes me think that this is a person who loves creativity, and a rigid white ceramic tile wouldn't suit that type of personality.