My family and I stayed at Ercument's facility for a whole week.
The location and cleanness of the apartment were just great, we really felt like home. Beds were really comfortable also.
The facility was not far from Istiklal street at all ( Less than 10min walk).
The only negative point I could mention is sound Isolation,
as we could hear and feel every step of the neighbours above, but wasn't a big deal as we were out all day and it's pretty quite at night.
I would like to thank Mr Ercument for his instructions and reactivity too, everything was clear and transparent.