In short: it is a good place to stay for a reasonable price. I can totally recommend it. In detail: this Airbnb is a small studio, very clean, it has everything you need, it totally looks like on the pictures, the only bad side is the soundproofing, it is very weak. The hosts are very kind, helpful and professional! About the location, well, this part of Şişli is a developing neighborhood, you can find new and nice houses (just like where this studio is) but there are some old and ugly buildings as well. So its not the fanciest part of Istanbul, but don’t worry, it is safe!!! This area is a home of students and working/middle class people. The metrobus station is 8 minutes by walking. You can easily reach everything from here by public transportation.