The Kiss of Death by Valentina Cilescu
It began innocently enough, Andreas though, when he was seduced by a luscious-bodied white witch called Mara. It was when he followed her to Winterbourne Hall, the finest whorehouse in England, where no sexual taste is too outrageous to be satisfied, that things began to get out of hand. For it was at Winterbourne Hall that Andreas first met a real life sex vampire.