1. What is rent?
If you occupy a residence for a restricted period of time, then you are the tenant of that residence. The person with whom you entered into the tenancy agreement is the landlord.
Renting a room or a flat means that you have a right to use the residence for the duration of the agreement. The room or flat does not belong to you, however. Before moving in, you should therefore learn about the house rules and any responsibilities you may have as tenant. This could include a heating requirement or restrictions on conversions and renovations of the apartment.
In return, however, you also have rights as a tenant. For the duration of the rent, the landlord may e.g. only enter the flat with your permission, except in exceptional cases.
2. What should I pay attention to?
When entering into a tenancy agreement, you should check whether or not it is temporary, i.e. specifies a fixed date for the end of the tenancy. In addition, you should check the flat for any existing defects and document them together with your landlord, so that you cannot be held responsible for these later.
If you want to end the rental of the flat, you must submit a notice in writing to your landlord.