This place is in a very centrally located area, within walking distance to just about anything you could need. Many local vendors and stores will have staff who understand varying levels of English, from zero to pretty good.
Kaan and his staff, particularly his assistant Nour, are some of the kindest, most accommodating and helpful people we've met. Kaan checked on us regularly, and more or less everything we asked for, or issue we brought up, was immediately addressed. Even before we checked in, I asked if he could provide a table and chairs for the balcony, and it was waiting for us when we got there. I asked for a microwave, and they brought one. I asked for an extension cord, they brought one. Nour even provided Istanbulcarts for us and connected them to our HES codes as we are travelers from the US.
The only detractions from an otherwise great stay were the uncomfortable bed, and the intermittent odors. The smell of cigarette smoke would enter the apartment from the downstairs bathroom when other neighbors smoked. More problematic was the odor from the upstairs bathroom. The smell would range from bad sewage to a mixture of sewage and ammonia. This kept us from spending much time upstairs. I can't really fault Kaan for this however as I believe it's a problem in the area. I have caught that smell while outside on the streets of Sisli and even in a doctor's office.
I'm glad we stayed here, as it gave us a glimpse of Turkish daily life and allowed us to interact with and learn people who are very different from us. I've had brief conversations with people who speak zero English and it did not get frustrating. Everyone is just that nice. I can't thank Kaan and his staff enough for hosting us.