Р-13

HE В РАДОСТЬ кому coll PrepP Invar subj-compl with бытье ( subj: abstr or, rare, human) can be used without negation to convey the opposite meaning) some thing (or, occas., person) does not give s.o. satisfaction, does not bring s.o. joy or happiness

X Y-y не в радость = thing X holds no joy (pleasure) for Y

Y doesn't enjoy X Y doesn't get any pleasure out of X.