Put the cups away or have a tree. Even stacked up in counter in a tub would look better (... and I have hooks for my mugs!)
Paint the walls more neutral colour - white with a hint of ...
Could you put fake tongue and grove over the tiles and paint that a deeper shade of the walls?
Is that a picture on the cooker? If it is presume it's not permanent ?
Accessories maybe a toned down red? Pink? Copper? And think about the taps, sockets and handles/knobs, table cloths, curtains and blinds and lean in (but not matchy matchy! )
Plants (prob fake if it's a let), from the top of the cupboards.
Not sure what your other walls are like but maybe do a (small) mplate wall or picture wall?
The red looks dated, but is dominant. You can get stove paint or have the doors professionally repainted . Could that be an option?
Have a look on Pinterest /buy one of the cheaper mags - House Beautiful. Take a look on Instagram - some one like Lisa Dawson .