![Casp21 by Bonba Studio](https://static.dezeen.com/uploads/2017/03/casp21-bonba-studio-apartments-barcelona-interiors-residential-spain_dezeen_hero-b-852x479.jpg)
Tiled surfaces and vaulted ceilings add character to Barcelona flat by Bonba Studio
Bonba Studio has transformed an office in Barcelona's Eixample district into a two-bedroom flat featuring traditional vaulted ceilings and multi-hued surfaces.
Casp21 is a 170-square-metre double-height apartment, located on the first floor of a five-storey block dating back to the late 19th century. The building had been used as offices since the 1980s.
![Casp21 by Bonba Studio](https://static.dezeen.com/uploads/2017/03/casp21-bonba-studio-apartments-barcelona-interiors-residential-spain_dezeen_2364_col_9-852x1304.jpg)
A spacious master bedroom and a bright open-plan living space are situated at opposite ends of the home. A mint-green, timber-lined corridor links them, and also provides access to a guest bedroom, bathrooms and a laundry room slotted in between.
"Arranging these volumes on either side of the corridor acts as a central axis to connect the sleeping area to the living area," said Bonba Studio, which is based locally.
![Casp21 by Bonba Studio](https://static.dezeen.com/uploads/2017/03/casp21-bonba-studio-apartments-barcelona-interiors-residential-spain_dezeen_2364_col_11-852x1198.jpg)
Original features had been concealed when the space was used as an office, including the vaulted brick ceiling – known locally as a Catalan arch.
But the designers wanted to re-expose these details – in a similar way to other apartment renovations in the area, including one by Laboratory for Architecture in Barcelona and another by Cavaa Arquitectes.
![Casp21 by Bonba Studio](https://static.dezeen.com/uploads/2017/03/casp21-bonba-studio-apartments-barcelona-interiors-residential-spain_dezeen_2364_col_14-852x568.jpg)
They removed the old drop ceiling to create four-metre-high ceilings in the bedroom and living room, and widened doorway openings to allow light to filter through the entire home.
![Casp21 by Bonba Studio](https://static.dezeen.com/uploads/2017/03/casp21-bonba-studio-apartments-barcelona-interiors-residential-spain_dezeen_2364_col_13-852x733.jpg)
"The reform, which has achieved a very personal ambience, fulfils the wishes of the client, who wanted the flat to become his place of disconnection and relaxation," said the designers.
![Casp21 by Bonba Studio](https://static.dezeen.com/uploads/2017/03/casp21-bonba-studio-apartments-barcelona-interiors-residential-spain_dezeen_2364_col_4-852x574.jpg)
The open-plan living space includes a kitchen and dining area, although these two spaces are set back into the green-panelled section that frames the corridor. Terracotta tiles contrast with oak floorboards, making a clear transition between the two spaces.
![Casp21 by Bonba Studio](https://static.dezeen.com/uploads/2017/03/casp21-bonba-studio-apartments-barcelona-interiors-residential-spain_dezeen_2364_col_0-852x1278.jpg)
A breakfast bar with a marble base and oak top is accompanied by grey bar stools, the same chairs that accompany a dining table and desk in the living area.
Two tall windows allow light to flood into the predominantly white-painted lounge space. They also open the room out to a terrace with additional seating.
![Casp21 by Bonba Studio](https://static.dezeen.com/uploads/2017/03/casp21-bonba-studio-apartments-barcelona-interiors-residential-spain_dezeen_2364_col_7-852x614.jpg)
At the opposite end of the apartment, the bright and spacious master bedroom also boasts clean white walls and oak floors, and also includes a walk-in wardrobe and an en-suite bathroom.
![Casp21 by Bonba Studio](https://static.dezeen.com/uploads/2017/03/casp21-bonba-studio-apartments-barcelona-interiors-residential-spain_dezeen_2364_col_3-852x568.jpg)
This wet room is recessed into the corridor and fronted by a glass translucent sliding door. It features the same terracotta tiles and marble seen in the kitchen, as well as matching dark grey tiles.
![Casp21 by Bonba Studio](https://static.dezeen.com/uploads/2017/03/casp21-bonba-studio-apartments-barcelona-interiors-residential-spain_dezeen_2364_col_8-852x1278.jpg)
The guest bedroom and bathroom introduce a new colour – pale yellow tiles cover the walls in the bathroom.
Photography is by José Hevia.