Great Stay! About a 2 minute walking distance from Istiklal Street. Surprisingly does not get noisy at night. During my stay, I had two problems with the stay but Ugur was very quick to respond and ensured I was satisfied and we could resolve things. Here are some things to be aware of, nothing to do with the stay, mostly the location:
1) No taxi or car will come here, they will drop you about 5-10 mins away or meet you 15 mins which is Taksim Square. There's simply no space for cars to come. So if you have a lot of luggage, its something to keep in mind as I learned it the hard way.
2) There is no elevator, and this apartment is on the 4th floor. Hauling my luggage up and down the stairs was a huge struggle.
3) Theres an odd smell in the apartment when entering
4) AC above bed is good. At random times would leak water and since bed is right below the AC, you get woken up by water.
Other then that, it was quite a pleasant stay and I had no issues.