It's a bit difficult to write a review for this building as it has certain cons and pros. And review is all about "personal" opinion. I'd like to start with positive points. It's within walking distance to metro station, Galata tower and Istiklal street, where you can enjoy many local cafes, shops and restaurants. You can even take a longer walk to visit the lively neibouhood close to Topkapi and Ayasofya. It's also a very safe building.
But, you need to know that these areas are very crowded with people walking shoulder to shoulder.
And now the cons: the appartment is old (not really "historic"), need certain upgrades and generally not very convenient. To be specific, The air conditioning & ventilation was not good. The AC is in the bedroom and while bedroom gets cold, the rest of the space is too hot. Also, the AC is right in front of the bed, blowing cold air into your head. The drier was also old and when turned on, it started to blow hot air in an already hot kitchen. You also need to know that the appartment is in 3rd floor and you need to take 50 plus stairs up and down. Although Meso and Furkan are kind & helping with carrying the luggage, at the end, it's you who should carry them. The alley was not clean at all, giving a very unpleasant look to the surrounding.
In general, I was not very happy with this building. For me, it was not comfortable, specially that I spent 2 weeks there.