The apartment is in a great location. Close enough to walk to Alexanderplatz in 10 minutes or take 2 trams nearby. I would recommend the Berlin Welcome Pass while you are there as it was well worth it to jump on and off public transit to get to all the sights.
It appears Saliha doesn’t live at the apartment. She was never there, it is her mother who lives there. She was lovely and gave me my privacy which I appreciated.
A couple of things to be aware of: you will have to walk up to the 4th floor of the building. There is an elevator but it requires a key, maybe ask in advance if she can meet you in the elevator for you bags. Also, it is a very large apartment and the private bathroom for you is on the very opposite side from the bedroom, it is not in the room as I thought. Finally, the bed is just a hard flat piece of foam, it was not comfortable for me and I found it awkward to climb the stairs.
It was a nice enough apartment and for the price was worth it for me, but I might have chosen to spend a bit more on for something a bit more comfortable for my liking.