The staff guides me to find the location of the room. I checked in pretty late and they were still available to nicely tell me how to get in.
Even though the alley that leads in there does not look welcoming, the building and the room are great.
It is very clean. Wifi signal is strong, there is also an ethernet cable.
The place is located near the Taksim Square so it is pretty animated. A lot of tourist around and a few shops.
So it is safe.
There is a hammam and a laundry service near the place.
I highly recommend the laundry for the good work and price. But absolutely avoid the hammam near the place, too expensive.
This is a touristic place.