In normal circumstances, the apartment deserves five stars. However, as the heating was problematic it gets four stars.
There was no functioning heating - none - in the master bedroom. In the rest of the unit the heating was not sufficient. Moreover, we could not adjust the temperature manually. In a severe Istanbul winter, during which we saw snow, adequate heating is important.
The shower was great and the kitchen well stocked. The location was brilliant, with transportation, food and grocery options all within a short walking distance. Patrick was friendly.
Other than the aforementioned issue, it was otherwise an trouble free stay.