Istanbul for 6 days

Dear All,

i am travelling to Istanbul for 6 days. i will be living in areas of Sisli & bosphorous

i would like to inquire on the following:

--decent (if not the best) Turkish hammam in the city? The cost
(dont want to overpaying)? Any other tips when in turkish hammam...Do's & Don'ts.

--Best 2 or 3 malls to visit among....(City’s Mall in Nisantasi or Cevahir or Istinye Park, or Kanyon in levant.
im not really in mall for shopping just for leisure & Kids Activities.

--Best Nightclubs or discos (don't need to be expensive...just Tourist friendly with Sober crowd)

Appreciate all answers in Advance :)