In order to reduce the size, it has to be stacked a level on top of the other into a cube space to provide a square floor plan. Not only the square-shape plans, but also pulling out and eliminate an unnecessary space would help creating a compact function together with the best utilizing all the circulation.
The blackened facades are punctured by new windows, including a large glazed opening that replaced several smaller windows and provides a view over the landscape.
Circular windows on each of the gable ends add a quirky detail that the architects suggested makes the building “look like an overgrown birdhouse”.
https://www.dezeen.com/2021/02/20/mjolk-architekti-czech-cottage-burnt-wood-cladding/