A dark red Panthella 160 Portable Lamp sits beside a woman in a warm living room with brown furniture and art. © 2026 Louis Poulsen.

North of Berlin, in the district of Reinickendorf, interior content creator and owner of the interior brand Haus of Hart, Sarah Hartmann transformed a classic 70-square-meter apartment into a lively, colourful space. Full of curated design pieces, DYI elements, and lots of 70s aesthetic, the typical Berlin Altbau feels anything like it.

A white PH Snowball pendant and a pale Panthella Floor Lamp in a dining room with yellow curtains and a red table. © 2026 Louis Poulsen.

“My style is a wild mix of the vibe of the 70s, space age design, Wes Anderson films or, as my brother once said, like Disney Land for adults. I pay particular attention to vibrant colour combinations with creative quirks paired with clever design, which puts you in a good mood.”

A white Panthella 160 Portable Lamp sits on a shelf in front of yellow curtains. © 2026 Louis Poulsen.

Lighting plays an important role in her style, as it goes beyond illumination itself. Each lamp is carefully curated to emphasise a specific mood, style, colour combination – or serve a specific function.

“I am a big fan of portable lights because I redecorate almost every day, so I can easily move them from A to B and implement new decorating ideas without getting tangled up in cables. This means I am no longer limited in my styling ideas and can get light wherever I feel it is needed.”

A PH Snowball pendant and Panthella floor and table lamps in a living room with red furniture and yellow curtains. © 2026 Louis Poulsen.
Sarah Hartmann sits at a red dining table beneath a white PH Snowball pendant. © 2026 Louis Poulsen.
A burgundy Panthella 160 Portable Lamp sits on a shelf beside sunflowers, with pale curtains behind it. © 2026 Louis Poulsen.

“But the Panthella is still my absolute favourite, which is why there are more of them in my home than I can count.

The shape of this design classic instantly puts me in a good mood. It fits into any environment without being too overpowering, yet still makes a clear design statement.”

Three Panthella 160 Portable Lamps in Chrome Blue Opal, white and burgundy sit on a shelf before golden curtains. © 2026 Louis Poulsen.