Location is actually 550m from Cemberlitas tram station. The climb towards the tram is quite steep for us so we only went out to the city once a day.
The best thing about this Airbnb is that shops in this area are a lot cheaper than those near the Grand Bazaar. We bought souvenirs and Turkish delights from these nearby shops. A101 supermarket is just next door, so we could cook ourselves.
Communication with Cesim was easy with Whatsapp. He was very helpful during our stay.