Depedns on where you are going, but most cities have at least some apartments you can rent (with furniture and stuff) for longer than a few nights. Generally a good place to start finding ones would be to contact the city officals directly, you can find their contact details online and more often than not also in english.

Oiskohan joku Noli studios sopiva tähän? Ei omakohtaista kokemusta, mutta olen vain jostain kuullut siitä.