We had a great stay in this apartment. The building is managed by a company called ADA home, who run it almost like a hotel with great hospitality. We had a warm welcome on arrival and the lady at reception gave us a map of Istanbul and talked us through the best places to visit and ways to get around. The building was very clean, with bright decor and new furniture. The room is not big, but was fine for our short stay. Everything seemed modern -- strong AC for example. There is a living room of sorts on the ground floor, whilst the apartment (on 3rd floor) is just the bedroom with kitchenette and bathroom. Good location, you're 3 minutes from Taksim square. Mustafa was friendly and helpful, and also the lady at reception gave us her phone number and was available to help with any questions (we didn't have any as everything worked well). The hotel-style accommodation was not what I expected but was actually really nice -- for example at one point I couldn't get our AC to work, but reception came and sorted it out for me straight away. Would recommend!