I spent last night I a graveyard, the second time I have done so on this trip. They aren't really scary or anything. Actually they are nice and quite, almost park like. I don't sleep on the graves, that would be a bit to weird or disrespectful for me, but somewhere off to the side is often nice.
This cemetery was actually really nice, with well watered grass. The little caretakers shed even had an outside faucet as well as an outside electric plug, so I was able to charge electronics, at least until it started to rain. Thats when I ducked inside my tent and made sure that everything was waterproofed. The rain stopped shortly, but by then it was already dark and I didn't feel like sitting in the dark just to charge something.