We ended up staying here unexpectedly and booked based on other reviews. We were not disappointed! We had a small room on the ground floor at the back, it was very quiet! There were also nice touches like slippers and robes. The included breakfast was great, lots of variety. The staff at the restaurant were friendly too. I found some of the reception staff a bit brusque but overall everyone was relatively helpful. The location is perfect, in the touristy area of Istanbul, very close to main tourist attractions.
My only quibble is that the bathroom door in our room offered next to no privacy (you can hear everything), my boyfriend and I coped ok but if you're sensitive about that kind of thing this might not be the place for you. Also, the bed was pretty uncomfortable, very firm.