This apartment is lovely. it's clean, well equipped and nicely decorated. the location is good for Istanbul if you plan to visit all the major attractions and areas, but bear in mind you will need to walk a lot. Istanbul is huge and traffic is bad so we used the metro everywhere, the station is a 15min walk uphill so bear this in mind if you have mobility limitations. Ahmet is very easy to contact and happy to help.
The only negative we had was the shop below was been refurbed which had very load construction work starting very early. this meant it was impossible to sleep past 8 am. which after travel and just enjoying your holiday was a slight disappointment.
We would recommend this place for the price but just wanted to explain the location as Istanbul is difficult to understand on maps of how the city works.