Ismet’s place is very nice but my low rating is due to two reasons. 1) the place wasn’t very clean at check-in (lots of hair in every room and clogged water drain in en-suite bathroom, no exhaust fan in either bathroom, also no broom or hoover in the property so difficult to clean or maintain); and 2) no oven and dishwasher in kitchen (consistent with property listing but it’s difficult to notice when it isn’t explicitly mentioned).
I think for the price you pay, the place should be much cleaner and better furnished. Also, note master bedroom with en-suite is tiny, no space even to keep a suitcase.
Location is perfect, easy walk to tram line and stones throw away from galataport. Ismet is easy to communicate with and helped us arrange transport back to airport.