Does your contract include utilities?
Please be aware that the rent specified in the rental contract might be ‘exclusive’, meaning that usage of electricity, water, gas and possible other expenses are not included. It is common that you pay a fixed amount for utilities to your landlord every month, who typically will refer to it as ‘servicekosten’ (service costs). The costs might vary greatly from property to property. You should always inquire if your rent is ‘exclusive’ or ‘inclusive’ and what is covered in the ‘servicekosten’, before you sign your rent contract.