It was a nice stay!
The location is top to explore the istiklal-area.
Maybe you can meet some other guys from the other rooms who can tell you some stuff and give some hints.
I don´t have met Merve in person, but her bfriend was friendly too.
The place is clean (ok, the bathroom is not comparable to a hotel, but ...) and the kitchen is nice to cook some stuff.

I had a nice 3-day-stay and recommand this place.