The Turkish bath or hamam has been around for centuries, playing host to ancient cleansing rituals. Istanbul is lucky to be graced with a large number of historical Turkish baths which date back to the Ottoman era.
Check this Blog with all the info and the practical advices ...work in progress...
One of the oldest, better and with atmosphere hamam of Istanbul .Reasonable price.
Wonderfull hamam ...very close by to our house and this is very important because after the hamam you may want to sleep and relax at home ....interactive tours and 5% coupon discount printable from the website ....dont miss it :)
http://www.cagalogluhamami.com.tr/
Again one of the best places to relax , close to Santa Sophia ...Virtual tour on the website...
http://www.cinilihamam.com/eng/default.asp?p=homepage
If you dare to cross the Bosphorous to Uskudar then you have the chance to enjoy the cheapest and nicest hamam in town and a bery interesting area of Istanbul ....a jewel really....