Süleymaniye Hamamı is still works as a bath but the way of bath management differs than others. First of all you certainly need to make reservation in advance. The other thing you have to know is that Süleymaniye Hamamı is only unisex public bath of the city. Single males or females cannot enter. Probably the most absurd rule is for local visitors. If you're local and if you don't have foreigner friend who stays at hotel, it's not possible to enter.