I stayed in Kistina's apartment for almost two months. The apartment was nice equipped for my needs and Kristina made sure I would feel comfortable from day one. I got quick response to small issues and requests I had during the two months. The apartment itself felt functional, comfortable and with little decoration. Kristina was very flexible to change things in the apartment whenever I would have some some specific needs. The fridge, dish washer and stoves were all brand new. The area was calm but close to all Kadiköy bars and restaurants. I enjoyed the walkway along the seaside towards Moda also close by.
I would recommend it both for short stays as well as, like me, for a longer period.