There are some many options: Greta Ocean Road, Wilsons Prom, Mornington Peninsula. All within 2-4 hours commute and are blessed with natural beauty with lush hills, azure beaches and fabulous hiking tracks.
Recently we went to Noojee (recommended by weekendnotes articles) and wished we had stayed in the area to explore the beautiful green rolling hills further. The waterfalls were beautiful and we had a wonderful time.
Daylesford has alot to offer, especially on Sunday, when their market is on near the railway line. Their are two lakes you can walk around, ie Victoria and Jubilee. There are many shops to browse with unique type places and plenty of delicious eateries. Two ways you can go one via ballarat rd from melbourne or calder freeway, stopping at woodend, then trentham on the way to daylesford.