Vanessa Salt 
Ice Hotel 4: Songs of Frost and Steam – Erotic Short Story [EPUB ebook] 

Night has fallen outside the small hut away from the Ice Hotel. Henrik and Vanessa and the three other couples are preparing for a sweaty, pleasant session in the sauna. But before they go there, Anastasia brings out the lotus staff – a huge dildo carved in wood. They all stare at the gigantic phallus with anticipation. This sauna session just became a lot more interesting.-