The apartment is pretty much just like the pictures, and the location is great. It is as close to Taksim as possible, and there is a very cute and cozy cafe only a few steps away from the door. Great way to spend the morning.
The building, and the surrounding buildings, are old. I think it's important to keep in mind. But despite that, the apartment has a fairly high standard. If there are any issues, Mert will send his cleaning assistant to help.
All in all it's a good value for the price, polite and helpful host, and good location!