It probably is not easy to find a place to stay in Sydney at this price. A friend and I stay at Andrew's place for 4 night. The best thing about our stay was the communication with Andrew although we didn't get to meet him personally.
The building itself is old but the room is newly renovated (except for the bathroom). The size of the bedroom is good for 2 but 2 people would not be able to fit into the bathroom at the same time (just so you can imagine the size). The room has an old but still working A/C although it doesn't have a heater. The wifi usage is limited to 300MB per day or there will be a fine (this is difficult for us to determine how much we use and we ended up not using the provided wifi).
3 unlucky things:
1. When we arrived, it was unusually cold and we had to buy a heat pack as there was no heater (Andrew said he had planned to install a heater after we leave).
2. There was a day she a guy came knocking on the door a little before 8am. As there was no door peep hole (and for our safety), we were just talking through the door. He said he came to put the windows' lock on. However, as we were scared and there was no prior notice, we didn't open the door.
3. The last night when the weather became hot during the day, we found a roach in the Bathroom.