I had a wonderful time staying at Shirley's listing! The mother-in-law suite was in the backyard and was easy to access, and easy for Uber to find me, so I could come and go as I pleased. This house is almost directly up and set back on the hill from the airport, so there was easy access (less than a 10-minute drive), but remarkably minimal air traffic noise if any.
The entrance to the backyard is through a gate alongside the garage which is situated at the ground/basement level, so I didn't feel like I was too close to the host's living area or would disturb them with the noise of the gate. I appreciated the VERY clean conditions of the suite's room, bathroom, and the bed was super comfortable – I've realized that I need to buy pillows like Shirley's!