Eeewww! Don't tile it. Imagine all that grout cleaning you'll have to do!!! Unless you plan on doing some amazing mosaic
Lose the pink whatever in the left of the photo and lose the pink flower arrangement
I'm guessing you can't lose the lounge or the mat so use the colours in them.
I think I see a nice green in the mat? Copy it. Sure would hide the dirt
Use a gloss paint thats easy to just wipe off. Maybe a few shades lighter than the green in the mat.
Whats the predominate colour in your favourite piece?
Whats your favourite colour in your favourite piece?
Then find something a little minimalist to sit on the ledge. Just one nice piece. Or maybe a small collection of things that go together?
I think your furniture is just fine - just don't over clutter when you have darkish stuff (been there lol)
Different strokes for different folks as the saying goes
And just a little splash of colour with dark stuff is good. Just keep it unified.
Good luck and please post a pic of the 'after'