The apartment is in a great location, really close to Galata Tower, between a metro and a tram station. It is small, with a really small bathroom but more than enough at least for a solo traveller.
My only problem was the morning pray call from the speakers of the mosque which is located just down the street. Even though I am not a light sleeper, it was waking me up early every morning.
Nonetheless I think the place is a great deal and I can recommend it. Cheers!