Apartment was quite nice and modern, and there was enough room for two people. We stayed there a bit over week. Location is great, there's a tram stop nearby (Tophane) and lots of restaurants and some grocery stores also. Galata tower is also really close, and you can easily walk to old city through Galata bridge.
One major con was that the neighbours next door blasted music really loud at random times. They are some sort of musicians, I saw one day that they had some sort of studio equipment at the apartment. Once in the middle of the night I needed to go and bang their door to stop it (they stopped it, fortunately). The walls are really thin so you can hear almost everything from next apartment.
Downstairs back yard is not as shown in pictures. It's just a concrete pit, so no need to go there. Upstairs back yard is nicer, but beware that there will be lots of cats hanging around and traveling through the yard.