What kind of noise do you require for sleep?

I voted for “doesn’t matter,” which is generally the case.

Three years ago, I started working at a job which entailed both a commute into the city, and the requirement to be in the office by 8am; in order to catch a train into Chicago which got me there in time, I had to get up at 5:40am. I naturally stay up late, and to get 8-ish hours of sleep, I had to turn in by around 9:40pm on work nights. I struggled to fall asleep that early, and I experimented with different ambient/white noise sounds on my Alexa speaker; I settled on a “thunderstorm sounds” app, which plays gentle thunder rumbles and rain sounds, and that helped a lot, and when I got laid off from that job after 9 months, I no longer needed the sounds at home.

However, I use that same app, on my phone, now when I’m sleeping in hotels, as I often struggle to fall asleep in a foreign bed.