I stayed in A94 which was next to the toilets. I did not hear toilet noise from there (flushing, etc). I did have the people camping next to me walking through my campsite to go to the facilities. The site had no shade for most of the day and it was mostly gravel (some sites had tons of trees, some had one or two). The showers cost 5 dollars, quarters only.
There are plenty of trails around the site for late afternoon walking.
Unfortunately I had a bad experience at the end of my trip. The couple in front of my site kept looking at me and walking by my site. Not an hour later, I had a ranger approached me to ask me of I had reserved the site and if it was registered. I had been there for two days and my tent was up both days. I don't know what that was about but as a person of color, it felt intimidating. I ended up packing and leaving a day early.