Passport valid 6 months after date of return, at least two free pages
For stays up to 30 days, visa on arrival; from 31 to 60 days visa to be asked at the Indonesian Embassy in your country (for Switzerland: Single-entry Visa).
Health
Recommended vaccines: hepatitis A, typhoid fever, diphtheria-tetanus
Vaccines against rabies and Japanese encephalitis bovine possibly suggested by your doctor, but not required
Prevention against malaria in certain areas (Mephaquine or Malarone, does not guarantee 100% protection)
Insect repellent (with DEET)
Money
Local currency: Indonesian rupiah (IDR). 1$ = ~ IDR 12,000 (1 Coca Cola costs around IDR 5-10,000)
Change in banks or at Money Changer (better rates)
ATMs accept Mastercards or credit cards around (usually ~ 250$ max per withdrawal)
Credit cards widely accepted in 4* and above hotels and some restaurants