Hizirbey Hamam 1458
Hızırbey Hamamı dates itself to 1458 and presents itself as the first public bath built after the conquest of Istanbul. It sits on Hacı Kadın Street in Fatih, within the Historic Peninsula near Unkapanı and Zeyrek. Google lists it at 4.7 from 267 reviews, and the listing shows it open daily 08:00–22:00; prices and services are not published, so message the bath before you go.