We had a really bad experience, the root and street to the apartment are unclean and you will have to go through a tight small stairs with a bad smell al along to the forth floor. The apartment is not as the pictures. It has one good toilet with the a small and uncountable second one that not within the pictures.
We had an issue with the water in the apartment that we had to manage more than 6 hours with no water in all apartment facilities. We had to leave the apartment with 4 remaining nights as the host was keep promising us to solve the water issue and we couldn’t stay anymore. Not recommend place to stay-in in Istanbul.