36 year old with wife and two kids looking for a flat for 6 months in cagliari

I am a profesor and researcher from Argentina traveling for a post doc in Cagliari, I am traveling with my wife who is also a Dr in Biology and my two daughters of 3 months old and 1 year and a half old. We need an furnished appartment, with at least 2 rooms in Cagliari for 6 months, between 16 of April aproximately and 16 of October 2014. Location is not a priority.