There is one family bedroom with a double bed, a sleeping loft for four children, and an attached bathroom. There is one additional family bedroom with one double bed and a special double bunkbed accommodating four persons. This bedroom has an attached bathroom with a shower and toilet. The other two bathrooms also have a shower and toilet.
From Interlaken you can cover 80% of Switzerland in a day trip -- either by train or car. The public railway station is just one minute walking distance from the apartment.