The house is at such a great location, and frankly I was suprised to see that it has such a price. It is a very close walk from the istiklal Avenue, which is the place you would like to spend your time if you are staying in Istanbul as a tourist. Even with the construction that was going on in the street there were people around 4 am in the morning, as well as many open cafes. It is a part of Istanbul that never really sleeps and a perfect location to have fun in. There is also a really cool bar just next to the appartement that is open till half past three with nice music and fun staff.
Berkan is a helpful and friendly host. I didn't find that there was much noise coming from outside and did not have a problem sleeping. The only downside might be that the house is not exactly the cleanest. That is not to say that there were any hygienic problems or anything. I did not find anything problematic, and any untideness is completely minuscule compared to its location and it's price. Though it might not be for you depending on what you value. Also if if you like history like I do you would find the house interesting on that aspect.
Overall it's a nice place. Thumbs up!