We had an awesome stay at Perihans Flat. the apartment is very neat, comfortable,100% clean. You can walk from Taksim by foot in about 10 min where an Aiport transport bus ist also available. Furthermore, a Tram, Metro, and Füniküler are there. Although it is very central the bedroom has its window facing to the inner courtyard and therefore you can sleep without much noise. I think it is perfect to stay in Istanbul! + Perihan is SUPER if there is any problem she will answer you very quickly and find an answer