They chose a floating structure that could move through London’s waterways independent of landlords, permanent foundations or conventional hospitality infrastructure – also allowing them to create something entirely off-grid. AdvertisementIn May last year, they acquired a near-derelict traditional widebeam canal boat, 17m long and 3m wide. Inside, the bathhouse is set up for a maximum of 12 people and accommodates a sauna, two cold plunge pools, showers, changing space and a small bar. As with many canal boat fitouts, the spaces are arranged in a line. It’s not the first time an architectural designer has transformed a canal boat into a non-residential use.