What is best way to travel to shenzhen from brisbane australia

As I know, Huaqiang Hotel will be a good choice for you. It is located at C, shengfang Building, no.100, Zhenhua Road. This hotel is quite convenient for situated near the metro stations and railway stations. It usually charges CNY300/night for a standard room. You can also find an express hotel on Zhenxing Road.
You can visit the Splendid China - Folk Culture Villages, Window of the World, SZ Happy Valley, Dameisha and Xiaomeisha Scenic Area, Chung Ying Street, Fairy Lake Botanical Garden, Meridian View Center, Overseas Chinese Town East, Safari Park, Xiaomeisha Sea World and Xili Lake Holiday Resort in this city.
Bagua Road Food Street holds the different specialties in the city. You can have a try there. It is only 4.5 kilometers from Huaqiang Hotel.
Yes, you need a visa to stay there for two weeks.
Generally, the plane ticket may cost CNY3,000 or so.
From October to next March will be a good time to visit there.