Adaptive Sound Technologies LectroFan High Fidelity White Noise Machine with 20 Unique Non-Looping Fan and White Noise Sounds and Sleep Timer

You end up getting used to it and ironically being unused to silence when you've been there after a few months. Sirens, delivery trucks, crowd noises, etc. Artwalk and larger events can be quite noisy but those generally wrap by midnight. The 2 AM Friday/Saturday bar flight would be my only concern. Bluetooth speaker playing brown noise on repeat is better than a sound machine IMO. But I got one of these for my grandmother and she says it is great. https://www.amazon.com/LectroFan-Fidelity-Machine-Unique-Non-Looping/dp/B00JU8P8VY