Switzerland is one of the most expensive countries to visit
I travelled with my wife, son, and parents - total 5 persons
I would like to share my money saving tips
I stayed at Interlaken for 7 days in an apartment. Switzerland is a small country and can be covered with 1 or 2 base cities like Interlaken and / or lucerne.
Stay in an apartment where you can cook breakfast and dinner. Everything is very expensive in Switzerland and home made cooking helps to reduce costs significantly. We used to buy groceries from local supermarket / Indian grocery store
Buy Swiss Travel Pass (STP). We bought 8 days continuous STP. You are entitled to use train, bus and boat. It includes family card where maximum 2 children upto 16 years of age can travel free of cost. It also includes free entry to more than 500 attractions. Also the holder is entitled to 25% - 50% discount on mountain excursion like Jungfraujoch, Mount Titlis
My suggestion: Everyone should at least visit Switzerland once in life time