Apartments and holiday homes
If you stay for a week or longer an apartment might be a good alternative to a hotel room. The supermarket in Lauterbrunnen allows you to get your groceries and cook your own meals. There are a few restaurants too.
The landlord or rental company will provide a free Visitor's Card upon arrival. The card provides various discounts on local attractions. Note that if you own a rail pass, you will get a better discount on many attractions.
The e-domizil website offers many apartments and holiday homes. The best price is guaranteed.