Deadline to resign from apartments is three months and is detemined by end of each month.
Exemple:
Apartment that has been resigned the latest the 31st of January means that relevant is free from rent 30th of April.
Deadline to resign from single rooms is one month and is detemined by end of each month.
Exemple:
Room that has been resigned the latest the 31st of January means that relevant is free from rent at the 28th of February.