ALATURKA HAMAM TAKSİM
If you are staying in Sultanahmet and want a hammam on the Beyoğlu side, this one is on Refik Saydam Street, on the lower floor of the Grand Haliç Hotel. It has women's, men's and mixed sections plus a couples' room, and the listed features include a pool, scrub-and-foam treatment and massage. The three hammam packages run 60 minutes and cost €55 to €75, and single massages start at €35. It is open every day from 09:30 to 23:00, which leaves room for a late slot after a day of sightseeing. Google shows 4.9 from 6,119 reviews. Whether a reservation is required is not stated, so ask when you book.