The apartment is really fantastic in a modern building. It's really comfy and equipped with new and modern furniture. Everything was clean and we had everything we needed.
We even could use the gym and sauna area for free during our stay. Also you can book a professional massage by the physiotherapist, which I would really recommend. There is a security service 24/7, so you feel save at any time.
You can walk to Istiklal street in just 8-10min or to the Galata Tower in 5min.