I advise against this accommodation. The apartment is made provisionally. The apartment is a remake of a former terrace and looks like it will collapse on the first earthquake.
During our stay, literally every thing had a glitch! Starting with the water dripping from the ceiling so intensely that the plaster fell off the wall. Later it turned out that the toilet was installed incorrectly and that dirty water poured into the bathroom.
The apartment smelled like sewerage because it wasn't tight.
The apartment is suitable only for the summer months, because poorly fitted windows let the cold air through.
In general, contacting the owner is very difficult, he sees no problem at all and constantly says that he will fix it tomorrow. The repair of the radiators took more than two weeks, in the end they were not repaired, but we asked for electric heaters.
The only advantage of this apartment is its location, in fact Kadikoy is a great neighborhood.
However, staying more than a few days in this apartment will definitely be problematic