Limdim House Studio reorganised the previously "commercial" two-bedroom apartment by removing walls to convert it into a spacious one-bedroom home named Brown Box.
"The idea comes from the byname of the owner of the house, Ms Brown," studio founder Tran Ngo Chi Mai told Dezeen. "Since she also loves the colour brown, our idea was to create a living space as gentle and calm as this colour itself."
"[We] processed the space with the aim of creating a new colour, a new breath to get rid of the boredom in commercial apartments."
As part of the opening up of the home, the studio removed existing walls and added curving partition walls in their place.
The curved walls were surrounded by stepped cornices as a modern take on crown mouldings that remove the harshness of corners in the open-plan kitchen diner.
The studio used a natural colour palette throughout, employing light browns, beige and wood tones to create a peaceful yet sophisticated look.
"We choose tones around brown and beige," explained Chi Mai. "when designing with this colour tone, we want the apartment to be peaceful, plain and still full of sophistication."
A rounded island at the centre of the kitchen diner was clad in pale terrazzo to provide additional counter space in the one-wall kitchen.
An arched niche frames a sink, terrazzo countertops and a row of taupe brown overhead cabinetry which was arranged in a semicircle to fit within the alcove.
Terrazzo slabs extend across the floors of the apartment and to the living space which is zoned by floor-to-ceiling Melaleuca wood cabinetry and wooden furnishings.
The ceiling above the living area has a curved design and merges into an arched wall that visually separates the living area from the kitchen diner.
"We use terrazzo all the way from the kitchen island, like a stream going down the floor and spreading everywhere," said Chi Mai.
"Choosing this type of material helps the colour in the house to become light and soothing."
"Physically, Terrazzo has good hardness, just enough gloss, and more heat dissipation than wooden floors, so it creates a cool feeling, especially in tropical areas."
An arched doorway leads from the open-plan living area to the bedroom space. Its walls were covered in a grey plaster-like finish providing a textural quality.
An en-suite next to the bedroom was fitted with a free-standing terrazzo bathtub below a large circular window that looks into the bedroom.
"The important thing when designing a space, in our opinion, is to create a new, sophisticated and especially to bring comfortable feeling to the owner," said Chi Mai.
"If the owners come back after a hard days work, they don't enjoy the life in this space, this space will forever be just a place to provide basic needs like eating, sleeping and that will be our failure in this project."
Limdim House Studio is an architecture, design and interior design practice based in Vietnam.
Photography is by Do Sy.