After seeing all the comments, I took a chance on L302 on the Sky Princess May 2023. This cabin is very noisy and would not recommend despite the location and extended balcony. I didn’t see personally but think it was the large towel / blanket carts coming through the door at 12:30 am & 6:30 am causing most of the noise. Anything rolling over the metal threshold can be heard.
Also, if you’re on a cold weather cruise, the glass doors provide extra wind blockage but bang with the wind gusts.
Earplugs worked a bit but the cabin was shaking from some of the noise. Happy cruising! Back to Aloha deck for me…