I stayed here with my wife and a baby, Check in process was very easy, host was so welcoming and helped to move my bags from office to the apartment.
The room was neat and clean, they have provided us a baby cot, thank you for that :)
It has a working washing machine, a cattle to warm the water, a comfortable bed, a good cabinet, a small stove, a hanger to dry the clothes.
This place is 20 mins walk from Istaklal street, 5 mins walk from the Bus Stop (Omer Hayyam), 20 mins walk from Eminonu (if you don't want to take a bus).
We have enjoyed our stay over here especially the mini breakfast, even if you order something from the cafeteria their price is reasonable as compared to the market.