Gedikpaşa Turkish Bath was built in 1475 and is one of Istanbul's oldest bath. It was built by architect Hayrettin, most famous architect of his period, with wish on Gedik Paşa who was a vizier of Mehmet the Conqueror.
Gedikpaşa Turkish Bath is located in old peninsula, it is easy walking distance to Blue Mosque, hagia sophia and the Grand bazaar. It's open from 6am to midnight for both men and women in separated sections. The entrance area has a beautiful domed ceiling with decorated arches and a fountain as well as a series of lockable cabins for guests' use. The bath has also small swimming pool which is not often found in classic Turkish baths.
Gedikpaşa Turkish Bath is very clean, centric and reasonably priced Turkish bath which remains popular with both locals and tourists. Its management deserves high respect because it's not possible to see any bad feedback about their bath or it's not possible to see any Istanbulers who doesn't speak highly of it.