We stayed in Ahmet's apartment for the past 5 days. I would highly recommend his apartment. It was spotlessly clean, very well equipped. It has a dishwasher and washing machine if needed. It is a very warm apartment, we had to turn the heat right down.
The whole block is so clean, entrance area, lift etc.
It is very well located in the Kadikoy area and the apartment is very quiet.
There is a household shop opposite the entrance and the man there was very helpful to us, thank you to him.
Ahmet called a taxi for us when we were leaving.
If we return to this area we will certainly book this apartment, if it is available of course