Being and architect I can assure you that this entire buildings architecture is just gorgeous and will accommodate you very well. So you looking for a place near taksim for 2-3 people their place is definitely recommend.
Their staff are available 24/7 and will help you for whatever reason. They even offered to wake me up for my shuttle to airport! how nice can they get..?
I will confidently choose them for next trip to Istanbul. Because they showed great hospitality, place had an elevator and the building and rooms were great quality.