In 1997 Christian Jacke (-Kerdel) took over the house and developed it back into a fully home. With the renovation and redesign of the roof in 2007, the creation of a south-southwest balcony and the redesign of the open kitchen space, these measures were completed. The historical building complex on Prätschli 2010 was preserved through the renovation of the old stable building "Ella".

The Chalet can be reached by car from May to November on a summer road. In the winter months the luggage can be transported over a 150 meter-long flat way with a box-sled.

Since 2001, the "Kamingesspräch Arosa" takes place in the “Wilhelmina” every January. Personalities of business, politics and media are discussing ideas and innovations of overarching themes and challenges of the present. They are invited by Christian Albert Jacke (-Kerdel). For more information and inquiries