We stayed at the Cihan's apartment for 3 nights and really enjoyed that.
While the apartment is placed very close to the lively district near the Galata Tower with perfect transport connections just nearby, the apartment itself is very quiet.
The property is nicely decorated, has everything needed for the stay, and has a wonderful view (a small downside - a couple of things in the apartment may need renovation soon).
The communication with Cihan was excellent, he addressed all our wishes and inquiries.
Would love to stay at Cihan's apartment next time as well!