Absolutely no sound insulation from a noisy street with noise coming from the street 24/7. It was so noisy that we kept checking whether the windows were open because you can hear every detail as if there is no wall or window. We had very little sleep in our 4 nights there.
The good: Firat and his co-host were great with communication, timely and met us in person to check in and show the apartment. The apartment was very clean. Good A/C. Internet was ok. Relative location to key attractions is great.