This reminds me there was a time in my country when not many people could afford a TV, so the TV owner's living room became a place for gathering

Man, I have envisioned something like this so many times. Personally, I think communal living but with everyone having at least a room that's entirely their own is the way to go. Ideally I'd imagine your personal room being somewhere between a bedroom and a living room, in terms of size. Big enough that you could have a few people over and retreat to your space away from the rest of your "community" comfortably. But I don't need my own kitchen or bathroom to be honest. I live in a 1 bedroom apartment and I often think about how much if the space is wasted most of the time. I use my kitchen for maybe an hour per day. 10 single apartments could share 3 kitchens without running into issues. Even if people tend to cook at approximately the same time, if anything that would probably make parts of cooking easier (though to be fair it'd also make parts harder). 1 person can stir while the other cuts vegetables, cook 2 servings of rice once instead of each cooking their own serving and washing their own pots/rice cooker/utensils. I often end up throwing away food because as a single person it goes bad before I can use it all. I'd love to have someone use this half a bag of cheese I needed for pizzas that's gonna go bad before I get to it.

This is a cool idea! I'd imagine a community that collectivizes to remove redundancy in tools would also be inclined to mostly cook together for the whole community. It's this the case in your world?

If so, I come from a family of picky eaters so I could see that creating conflict as not everyone wants to eat the same thing haha. But I could also see it being an amazing opportunity to bring the community together