What if you ran each band halfway between counter and window (or counter and wall cab) and then bumped up behind the range and between the windows? The band would always be halfway between the counter and the object on the wall. I think it would be more interesting than completely straight lines. If you do it too low, it risks being hidden by anything on the counter. Too high and there is shadow from the cabinets.

I really would love to renew my terrace (in a cheap way if possible) ! Could you help me? The surface is a perfect square and it's pretty ample and spacious. What do you suggest me to do? What kind of furniture and plants should I use? I have different pallets boards and also cinder blocks. A new design is absolutly welcome!

Contractors do not design. They build. You need an actual K&B designer. You have a very restrictive space to get all that you want without turning it into a wet room. You, and your husband especially, need to educate yourself on modern waterproofing systems and how a wet room is properly created. The Schluter system will offer a lifetime warranty if their products are used from start to finish, including their thinset. Look at their YouTube channel. And don’t be so sure that your choice tractor can actually do this properly. Especially if he hasn’t had the wetroom and waterproofing conversation with you. Read below, and have a tough conversation with him on all points raised. https://www.ceramictilefoundation.org/homeowners-guide-to-hiring-qualified-tile-installer

If and when you do purchase a new rug, please go for a much larger size, so that all your furniture is sitting on it. That instantly makes your room look larger and more comfortable. A large floral pattern actually looks great with your furniture. The size of your chairs is perfect with your couch, and I'm afraid a recliner might be too large and bulky. The best option might be to recover the chair in navy and find a larger rug. I hope you'll consider a large floral pattern and darker colors again because that works well with your floor and showcases your beautiful couch and the yellow pillows.