I stayed in the apartment for a total of 56-nights or so.
The apartment's location is fantastic; nothing really beats in terms of its proximity to "Syria Street" and its centrality between Faith and Yavus Selim.
But the apartment itself is a bit of a let-down, despite the pictures. The living room has almost no natural light and there is not proper place to sit down and eat except on make shift tables that are rather flimsy. There are noises coming from the neighbors constantly (I think because of construction and pipes). While I was there, the Wifi cut out suddenly for over a week. At some point, the fridge randomly stopped working and because I did not open it for several days, a terrible fungal smell came out and permeated the apartment (including from food that was left over from a previous renter). There are numerous leaks throughout the apartment in the kitchen and the bathroom - which has leaks that drop into it from water pipes belonging to neighbors.
The apartment itself was not cleaned very well. The bedsheets had bugs on them when I first arrived and the carpets did not seem to be vacuumed at all. During the middle of my stay, the host very politely requested me to leave the apartment for close to 10 days (due to a surprise visit from his parents), which I voluntarily agreed to do. However, when I returned, there was body hair on the bedsheets and pillows; and crumbs of food all over the bed blanket- all of which I ended up cleaning myself.
I will say Muhiddin overall is very responsive to messages, when texted etc - even though, sometimes slow to get to the solution. As a person, he is very nice and very welcoming. However, I would not recommend this place for a long-term stay.