My first and only attempt at the gun under the pillow didn't turn out well. It ended up at the foot of my sleeping bag. You might-so far-have mastered not moving the gun, but the night stand would be a better place. Much less lint there too.
In not much younger than you, the decocker/safety is your friend. One slip while doing the hammer/trigger thing, there's gonna be a loud noise and a hole somewhere.
Just because the revolver says .357 Magnum doesn't mean that's what you have to use. +P .37 Spl will work just fine if you put it in the right place. So far as the noise thing, regardless of what you use, Peltor makes a nice tactical muff (Tactical Pro MT15H7F SV). A touch of one button makes your hearing as good as it used to be-or better-and still protects your hearing from gunfire. Once set for volume, it retains the setting until you pull the batteries or they die.