The renovation is the first residential project by the Stockholm studio, which is better known for its furniture and homeware design, including a range of chairs for Spanish brand Sancal, and a curved steel clothing rail.
Since its construction in the 1930s, Casa Ljungdahl had undergone multiple renovations.
"When it was our turn to renew the apartment our first step was to simplify everything we felt was too much, in terms of dimensions and materials," said Note Design Studio. "The task was to create a relaxed, soft environment and the main interior feature is a dark, low-lying base line that runs like a unifying horizon through the whole apartment."
Referencing images of a brown coat and some beige-coloured sports shoes, the studio opted for a soft colour palette.
"The images were our inspiration," Note's Susanna Wåhlin told Dezeen. "They are noticeable in the ambiance and the feel of the interior. The sandy tones are there, on the walls and some of the furniture."
"The mix between a cashmere coat and a pair of sneakers is there in the handsome, but still quite laid-back expression of the loft. The image of the plaza represents our search for a look that would stand the test of time," she added.
All walls and ceilings are painted in apricot pink and sandy beige tones, while storage units and kitchen work surfaces are a blue-grey colour.
"Nothing in the apartment is white as our client's wish was for us to design a homely, yet representable interior," said the designers. "We've aspired to reach a certain mood rather than a concept."
Steep niches are filled with deep drawers and shelves, framing the rooms and giving a nod to the building's original architecture.
An existing fireplace made up of several blocks of concrete was left in place in the living area. A light-pink coloured staircase constructed from folded steel leads to a mezzanine level.
"The staircase is made of steel metal, and took quite some time to construct," said Wåhlin. "It looks simple and light but is in fact really complicated and heavy. It leads up to a small loft hovering above the dining area, and has the same pink tone as the walls and the ceiling, so as to look like it's floating lightly upwards."