I have stayed at your hotel in January and do not remember if you have a sauna and steam room, can you tell me that? What about jacuzzi?
I have no idea, never tried.
Why would you have a sauna in Jakarta ????
I did not use the gym during my stay since we walked so much exploring Jakarta and the area where the JW is located is safe and easy walking. But we did use the pool extensively and it is quite nice. But there is a steam room available for guests to use and as one respondent indicated a great spa at the Ritz available to most guests at the JW.
Get an answer from JW Marriott Hotel Jakarta staff and past guests.