Well, it is a short two minute walk to a bus to go to the city on a 413. Peak time there are a few. But, after peak I think there is one every 30 mins. Check with Google maps. Then if you need to catch a train it is about ten minutes to Summer Hill. Possibly catch the bus to the train station. But, the bus is quite quick. No changing. David has two Opal cards you can borrow. For your stay. As long as you keep the balance above $10 before you leave.
Summer Hill village/ precinct is well equiped with most eateries. The pub is good. Happy Hour from 5 to 7 pm Monday to Friday. Newly renovated.