Can anyone suggest good caravan parks in the Perth WA area? 2 Adults, no kids or pets. Easy access with 20+foot van and close to public transport and /or the city. Prefer a park without security problems. I have to get to a PO to collect a parcel so prefer one nearby. There is a caravan park at Midland (Middle Swan) but it seems a bit cheap....is it under the flight path or something???TIA