Musa is a extremely helpful host. His friend greeted us upon arrival and Musa was very helpful with the checkout - his friend helping us carry our luggage to his office and then to the bus stop.
The flat is very nice, bright, airy, clean and very comfortable. It has a great covered terrace to enjoy breakfast and the evenings. It is located in a great area within 10mns of Taksim square and within easy reach of the main parts of Istanbul. Really enjoyable place.
However, it should be noted that the flat is close to a major nightclub (Al Sharq) which plays loud music every night which can be heard in the flat. This did not stop us from sleeping but it was not as quiet as we expected in the evenings.