I experimented further and the moodlet does grant +30 when sleeping on a high quality bed. I've tried moving the Vampire Sanctum out of a basement thinking that might be the problem, but still no luck. Removed the .package files from "My Documents," started with no custom content, and removed all mods. Would clearing the "DCBackup" folder be a good idea (except I think for <ccmerged.package>)? Any other "reset" type actions to try?
Does anyone else actually receive a positive moodlet from having a vampire sleep on one of the vampire "beds"? It really seems like a bug considering the moodlet icon is colored green, which is normal for positive moodlets.
I can't say if this started with the recent patch etc., since this is my first vampire.