AYY Housing Office is mainly closed during July.
If you are returning the keys of your old apartment: drop the keys into a envelope, write your name and the exact address of the apartment on the envelope and drop it on the mailing slit on the white door of the upper stair of the AYY office (Otakaari 11).
If you need the keys of your new apartment: contact the Housing Office (asuntotoimisto@ayy.fi) separately and agree on a time when you can come and pick up your keys.