If you run into trouble with your landlord, you are entitled to rent protection.

A housing association is not allowed to simply terminate the rent. There has to be a good reason for doing so: rent arrears or public nuisance. If you do not agree to the termination, the landlord is obliged to request the court for permission to terminate the rent. This is known as rent protection.
Privatelandlords can only terminate the rent in the event of rent arrears, if your contract is for a limited period of time or if the landlord urgently requires the room for his own use. Always be sure to inquire whether the landlord's reasons for termination of the rent are well-founded. This can be done at the JIP, the Citizen's Advice Bureau and the Legal Aid and Advice Centre.
A person renting a room from a host(ess) for the first nine months cannot fall back on the rent protection scheme. The host(ess) has the right to terminate the rent without reason, with due regard for a 3 months' notice period. Living with a host(ess) implies living in the same house as the landlord.

There are cases to which the rent protection scheme does not apply:

• municipal buildings which are temporarily rented out prior to demolition or redesignation.
  (a.o. via Ad-Hoc);
• buildings which are seized by a bank for reasons of mortgage backlog on the part of the landlord;
• rooms that are sublet.