there no really good perk, every perk is good for roleplaying, but not really effective. Dunkard perk is good for buff lewd with ale or wine. Lip Service from prostitue background is OP as fuck because it's basically double all money from flower selling.
Coward is fun, but only for roleplay(i don't know if it have more events rather wet himself when have fear effect, but that good if you play mage or some glasscannon-build for roleplay only). Sadist/Maschoist is pretty good ngl, game have many events where it's triggers, exhibitionism is meh, but ngl it's really helps for skips some checks and if you have monster fuck kink(i don't so i don't really like this perk). Oh, and Good cook is good perk if you need faster camp farming for levels(because it's grind)