Head to Pemberton then take the Nannup Rd. Before you get to Nannup you will come across a turn to your left with sign posting to Augusta via Alexandra Bridge. Take that. You can either continue all the way through to the end and the turn right to Margaret River or turn right up Sue's Rd. Part way up Sue's Rd there is a turn on the left that comes into the back of Margaret River. Good roads all the way. Nannup Rd a little narrow but not bad, Road also narrows after Sue's Rd through Alexandra Bridge but again not bad. Some hills but nothing of consequence. Certainly nothing like Blue Mountains just small hills. Augusta is a better stay than Margaret River. Margaret is super busy. A bit crazy really. Try Turners Caravan Park in Augusta right on the river. Lovely spot. Still able to do all the wineries from there plus caves, the lighthouse and the old waterwheel. Lots to see.