We stayed for 3 weeks at the apartment. Perfect location in Sydney that makes it easy to get to some amazing cafes, restaurants, and public transit. Urban Rest was extremely communicative throughout our stay and were quite helpful. We also appreciated the cleans.
Noise overall wasn't an issue and the street noise was surprisingly quiet for how central it is. However, the walls can be a bit thin and you can hear the noise from nearing units (we could hear someone's cell phone vibrating next door). Other reviews mentioned parties next door, but we didn't have that problem.
One other note is that while the bedroom is technically a bedroom, the door way is two sliding glass doors. My wife and I were both working remotely at the time so we split calls from the patio and desk.