Isik was a great host. He briefly informed us where to go. He replied to our enquiries (through emails/calls) promptly. He let us use the IstanbulKart which was cheaper. He loaned us a Turkish SIM card and it makes it easier to make calls and use the internet.
The apartment was handed to us in good and clean condition. The location is really accessible to just about anywhere! It's about 5 minutes walk to Taksim Square, the Funikuler, the bus station, Istiklal Cadessi and food is scattered all around!
I would highly recommend Isik's apartment and will definitely return of i were to come to Istanbul again.
Thank you Isik!