I liked this place, it's very close to Taksim Square and İstiklal Street which is great. I stayed for a few weeks, I almost went for a walk in there everyday. Although it's so close to the busy area, I did not hear anything at this place to bother my daily work or my sleep.
The host, Mehmet, was a great guy. He was checking every few days if everything is alright. He speaks great English, which is nice.
There streets are steep all around this area, so it's very normal to have stairs on the sidewalks. All around the neighborhood (and the city).
I would definitely recommend this place, and would stay here again if I decide to visit Istanbul again.