As a frequent visitor to Istanbul, I must say this is a great location. Just a few minutes away from a metro stop, Galata Tower, good bars, and of course Istanbul's Istiklal street. You will also be a short ( but hilly) walk to Cihangir, a fairly young and social neighborhood fit with great cafes, dining and night life.
I stayed in the top suite and had a great open balcony, and the apartment received a lot of light which I loved. As previous reviews state, there is a school next door, so you will hear children playing in the morning.