Imagine this with a canvas pad or marrow yoga lounger thingie across the top under your former window. Then the towels and oils/salts for the tub could be stored inside it. Made simply with bamboo butcherblock.
De Opkamer is a big European dealer in reclaimed building materials. This includes antique fireplaces, fireplace mantels and antique flooring such as terracotta floor tiles, limestone flooring and dalle de Bourgogne.