A Turkish bath is not a spa treatment, and Cagaloglu Hamami is the clearest place in Istanbul to understand the difference. It has been open since 1741, in the same building, following the same sequence: warm marble, an exfoliating scrub, a cloud of foam, and cold water at the end.
The architecture is part of it. The domed hall is lit only by star-shaped openings, and the sound of water on stone carries in a way that makes conversation drop to a murmur. Men and women use separate historic sections.
Couples can book adjacent sessions, and treatments last around an hour and a half. From Romance Istanbul Hotel it is a four-minute walk, which is why many guests keep it for the last evening.