dont have very good news for you. If they offered you place for 600$ a week for all of you. Take it. At the moment just friend will rent you anything cheaper...I dont know for how long you are here, but rental agencies will not talk to you if you are looking for something less then 6 months. Caravan parks has prices from 600/week. What you can try are the houses for sell. Sometimes they will rent them for short term before they go on the market. But its not a easy job...