If you like buildings with a history, with old murals, heavy forged doors, and birds nesting at the entrance and marble stairs- this place is for you. Inside the roof-top flat has a modest contemporary design, three comfortable beds (double and two singles), and a closed terrace with a balcony and view of the Bosphorus.
Despite the old building (and pipes), shower pressure is OK and sewage works well. Internet is also working properly.
Two kids and two adults - we were just perfect, with enough space and a great dining table. We didn't use the kitchen, except for cooling water in the fridge. Neither have we checked the efficiency of the air conditioner, which I believe is handy in the hot summer months, considering that the space is under the roof.
The location is just perfect - it is within walking distance to Galata Tower, Aiya Sofia, Taksim Sq, and other landmarks and has access to the Subway. For a famous Turkish breakfast, I recommend visiting Cafe Privato Restaurant, which is just around the corner.
Like previous reviews, I suggest some renovation of the flat, as water has damaged wall covering in the kitchen and bedroom.
Otherwise, have a great stay!