Even with a door, the wardrobe already has significantly more space than before (previously 113cm in the niche, afterwards something around ~180cm, depending on the exact planning possibly more). So it still helps the hallway. My husband says "it's simply comfortable" and he likes the idea of being able to enter the kitchen from the hallway (for groceries, but also just when coming down the stairs). And he thinks it feels less confined in the kitchen than a U-shape or less corridor-like than a double-line layout.
Honestly, I am relatively neutral about it. The straight wall in the hallway helps, in my opinion, regardless of whether there is a door or not. If I chose a door, I would prefer a sliding door, but we’ll see.