When you rent a house or a room, your landlord is not responsible for all repairs and maintenance. As a tenant, you are expected to do small daily repairs that don’t cost much yourself, such as unclogging the drain, venting the central heating boiler, fixing a broken doorbell or lamp. You must also repair any damage you cause yourself. The landlord is responsible for major maintenance: roof repairs, paintwork on the outside, a malfunction in the built-in appliances, etc. You have to give the landlord the opportunity to carry out this work, but only by appointment. If he or she also does small and daily repairs, the costs may be charged as service costs.
More information can be found on the website of de Rijksoverheid