Floor plan design single-family house with around 150 m²

I was referring to, with us, various TVs, not to the piano. We do not own one.

Various at once?? Oh dear. I can understand you. One is almost too many.

How do you want to look out of a window with a one meter railing height from a chair seating position?

Hmm yeah, it's not ideal, but better than always seeing walls.

You have already been given so many suggestions here on how to improve the situation, but you often find reasons why it won't work.
Keyword "piano," although to me that's more like a keyboard. If I had a room situation like you, from my point of view it just wouldn't work that the thing takes up space in the living room.

I'm just that attached to it. But if it doesn't work otherwise, a nice place can be found in another room.
I really like the suggestions here and will definitely implement some of them.
I see for myself that it doesn't look great right now and that something needs to be done differently.

And to be blunt, I also believe that a bigger house including a large living/dining area won't bring much for you. Because in my opinion, judging by everything you've written, you lack the taste and the knack to furnish tastefully!
Your posted pictures speak volumes...

That's true, which is why I need help with it.

It always depends on what you use the piano for. If you practice a lot yourself, then in my opinion it even makes sense if the thing is NOT in the living room, because you can rarely practice there calmly and concentrated (I don’t want to know how many hopeful pianists have been lost because the family piano was in the living room and one couldn’t practice in peace).

But if you rather use it to make music together, with family, guests, ensembles, then I think it is quite justified to have it in the living room.

The OP planned from the beginning to have the little piano in the living room - I assume he has good reasons for that. So I would rather take that into account when furnishing.

I think Baufie expressed it a bit too drastically, but I have also hinted at this twice: not everyone is gifted to furnish tastefully. And that has nothing to do with the budget. There are god-gifted people with a knack for beautiful interiors. They also often have good ideas and create brilliant furnishings with a few things and some witty ideas. Others can put super expensive furniture in the house and it still doesn’t become cozy, not to mention an “aha” effect. I think it speaks very well of you that you accept that and know it.

Now practice the second step: accept the suggestions. I still have the feeling that you try to find a counter-argument to every suggestion. That won’t get you any further. Again the suggestion to maybe find a professional who supports you. First set the budget and what needs to be renewed now and what you might buy in a few years. But now develop a consistent concept - the implementation can then take place step by step. The kitchen must be included - I assume it is new. Or is it something brought from the old apartment and will be replaced at some point? Then you can neglect it for now. But I assume it will stay.

If you actually get a professional, collect pictures of rooms you like beforehand from the internet, magazines etc. The professional will recognize what “turns you on” and realize that within your framework. When I see the picture of the sofa that you like so much and the reality – I am perplexed that this is the same person! And that is exactly where you need someone who connects the two. Because obviously you see beautiful living possibilities elsewhere and recognize them. And when it comes to implementing a style, an idea within the framework you have, that is exactly where you need support. I admit, I would never have built like this, but honestly: it is not impossible to design the room nicely. I know other living rooms where I sometimes wonder if anyone ever thought that people are supposed to live in them. You have the possibility to place furniture, it is bright, and the rest is doable!

If I were you, I would also try to stop 'prescribing' to people where and what they should see. Most of your guests will not look for a place to silently observe your prescribed details (garden, west side, south side, not in the hallway, fireplace). You live in the house, you are not a museum!

Oh yes - we only have a two-seater. With guests, we usually always sit at the table - we specifically made sure to buy chairs that are very comfortable to sit in. And our guests keep confirming that we made the right choice... some have even developed almost TOO good endurance for sitting.

We sit less on the couch in the living room. And when we do, we bought cardboard stools from Remember products, so you just have to make do with a stool or sit on the floor (with underfloor heating, not unpleasant at all). I would never put a bulky sofa in just because guests might sit there three times a year; there are other options for that. In our old apartment, there wasn’t much space, and when we had a party, we just put out a simple beer bench and that worked wonderfully. Hey, that’s for a few hours - I don’t need an expensive piece that sits unused (and in the way) the rest of the year.

I would always decorate the living room only as a cozy room for the family, which guests may also occasionally enter. The guest area is preferably the table / kitchen.

we have made sure to buy chairs that are very comfortable to sit in.

(Where) have these already been seen here?