When Hans Swierstra takes over as Director, there are 25 guests at Sonnmatt, who are being looked after by 40 employees. At this point, a room costs CHF 68 per night on a full-board basis. Sonnmatt no longer meets modern standards. The linoleum floor still dates from 1910, and in some places is as thin as paper. Out of 70 rooms, just 25 have a bath/shower and toilet. An innovative and successful period begins at Sonnmatt. The reception area and guest lounges are renovated. En suite bathrooms are fitted in the rooms. In 1976, the founder’s grandson, Dr Rainer Hotz, takes over the medical leadership of the private clinic. In 1979, the fourth storey, which was previously used for staff accommodation, is extended to provide more double rooms. A new road is built, meaning that it is also possible to access Sonnmatt from Schädrütistrasse in the east.