Europeans of the 19th century liked to associate sexuality, sensuality and lustfulness with the Orient and Islam. Paintings such as this one portraying the harem and the alleged "pleasures of the harem" were very popular with the European public.
Jean-Auguste-Dominique Ingres (1780–1867), L'Odalisque à l'esclave (Odalisque with Female Slave), oil on canvas, 1842; source: Walters Art Museum, accession number 37.887, https://art.thewalters.org/detail/18275/odalisque-with-slave/, Baltimore, CC0 1.0 Universal (CC0 1.0) Public Domain Dedication, https://creativecommons.org/publicdomain/zero/1.0/.