Ollie's place is great! It's clean, strategically located near train station (2mins walk), supermarket, cafes and restaurants (the famous gelato messina is only 7 mins walk), have a rooftop (which we really like to use during the evening - to watch sydney harbour bridge while sipping tea and eating chips), complete amenities, and located at the back of the building so it's nice and quiet.
Ollie is a great host, he provided us simple breakfast, varieties of tea coffee and beverages, and snacks. Ollie replied to our messages quickly, and always make sure we have what we need.
I would recommend Ollie's place to anyone who visit Sydney. 5 stars!