Very clean and comfortable place and the staff is very helpful. The location is perfect and very central as you can easily take a tram, ferry, bus or even cable car in few hundred meters distance and reach Taksim, Üsküdar, Sultan Ahmet, Kadıköy, Eminönü etc. And Karaköy itself is a very charming and lovely neighbourhood with lots of historical sights like Armenian and Greek churches, Ottoman mosques, cafes and bars and shopping opportunities like Galataport. Highly recommend.