Okay, I stayed at the apartments for 1 month and will try to be as objective as possible.
Pros of this place:
1) Two floors big spacious apartments, you can live there with your partner and don't even see each other during the day :D
2) Sunny balcony
3) Nearby you can find cheap food and hookah, staff there is quite friendly and positive.
4) Internet is quite good, so you can comfortably work from home
5) Host is very hospitable and patient, even to those who doesn't understand local religious events.
Cons:
1) Muslim Mosque is located 50 meters from these apartments. which prays using loudspeakers every 4 hours or so. I mean, literally every 4 hrs, during the night as well.
And it's really LOUD.
You won't be able to sleep during the night or have a meeting comfortably during the day.
And if you are same lucky as me to live there during Ramadan - the whole month at 2 AM you will be additionally wakened up by a man with DRUMS in his hands, making noise and singing religious songs to wake up all neighborhood.
2) All neighborhood is very religious, including traditional women's dress.
Also it's a very poor district. If you are from Europe you won't feel comfortable there alone.
3) Infrastructure is poor, if you want to get to the center of Istanbul (Taksim square), get ready to spend appr 1 hour staying in heavy traffic.
Public transport is very limited, unfortunately.
4) Every day, during the day, under your windows you will hear screams.
The good point is you can always go and play football with a bunch of 5-6 yrs old children. And do fireworks with them as they do every other day.
5) No normal gym nearby, if you are a foreigner - you won't be allowed to the modern gym nearby because you don't know Turkish :)
That's it. It's you to decide whether this works for you or not.
It could be a good place to spend 2-3 days and get religious insights and investigate the district, but I would be very careful in booking long-term stays here. Only if you are deaf or you can concentrate under any circumstances.
Thanks.