Flight
Fly from Sydney/Melbourne to Adelaide Airport, we recommend flying with Jetstar, Rex Air, Qantas, or Virgin for the best rates. One way flights are usually around $100-$150 per person (Around £60). From ADL airport it is a 15-minute taxi to the city centre or Glenelg Beach.
Rental Car
If you want to explore more of Adelaide's beautiful wineries and make a weekend of it, we recommend hiring a car. You can pick one up at the Airport from the usual suspects like Budget, Enterprise etc. Best rates are usually found via VroomVroom.com.au. Car rental in Australia is usually pretty cheap (between $30-$50AUD per day)
Hotel
We recommend staying in Adelaide CBD, there are plenty of hotels including Holiday Inn, Pullman & Hotel Grand Chancellor. If you want more boutique hotels then look at Hotel Indigo or EOS in the City. If you prefer to be near to the beach then get an AirBnB or hotel at Glenelg or Brighton.