I love Marcel Wanders.
A lot of people will center their living room around a TV. I personally think that's the wrong decision. I mean, have it there, absolutely. But to walk in and clearly see that the sole focus of any time you have in your house is that TV?
De-cluttering can be overwhelming, so start with that one small thing. Clean out your junk drawers. It can lead to so many more beautiful things. Start there, and you'll find yourself cleaning the whole rest of the house.
Modern minimalism has become less strict over time with a wider range of textures and materials, with other cozier layers.
You can really have a no-holds-barred relationship to materials with mixed metals and colorful schemes or more controlled palettes that are more tonal or restricted to a single accent color or metal finish. There are really no rules, and that is what makes contemporary design so limitless and enjoyable.
I tend to lean toward a more minimal aesthetic, so when I use wallpapers in my interiors, I like for one or two prints to be the star of the show. I would recommend being careful in your use of strong prints so the room doesn't get too busy. Use one print that dominates and one as an accent.