We loved our stay in Bondi at Karl's place. It was the absolute best location and was essentially right above the iceberg club. We loved being able to walk there each morning and have coffee/swim:)
Karl's place was a great beach - vibe house and he even was able to provide beach bags. He also was very responsive and allowed us early check in which was super convenient.
For the apartment, expect a ton of natural light and an incredible ocean view where you can watch/hear the sounds of the waves. Also can feel the ocean breeze.
Also expect a ton of stairs which can be difficult with luggage but expected of an older building.
I highly recommend Karl's place for a great beach condo stay!