This AirBnB is in a good location if you want to stay around the more expensive side of Istanbul. It's down the street from some nice coffee shops, and about 20min walk to the major mall nearby.
The accommodation is on Level 1 with no elevator - so be prepared to carry your bags up tight winding stairs. The apartment itself is roomy and easily accommodated the 5 of us traveling together. 2 bedrooms with double beds, and a larger couch made for a good nights sleep. Basic amenities are provided, but no extra touches. Full service cleaning does not take place after every guest departure though, so something to keep in mind. Bed sheets, towels, etc are changed of course.
Ela was very kind in letting us check in a few hours earlier even as her other guest was leaving. She is very communicative and quick to respond and help out with any questions.