The Galata is a wonderful hotel with friendly staff, delicious Turkish breakfast, and well-appointed rooms. The Turkish bath on-site is very nice, with similarly amazing staff and the amenities you would expect. My only issue, and not one the hotel can control, is that the area immediately around the hotel is in a state of transition. Many buildings are under construction and its difficult for car services to reach. It's not really a big deal because once you walk closer to Galata Tower, things are nicer again. If you're reading this 6 months from now I'm guessing much of it has cleared. I'll also acknowledge we stayed in mid-February, which is definitely the off-season, so that could partly be the cause.
Overall an amazing experience and one I would repeat next time I'm in Istanbul. Definitely order the Turkish breakfast in your room and the Turkish bath!