We stayed at the appartment in Nov 2020. Too be short - It's perfect.
There is everything you need inside. A lot of kitchen utilities, plates, knives and everything for cooking. Internet is ok. Beds are comfortable and there are blackout curtains, that's super great!
Location is good, little shop just at the corner, Taksim is in 10 minutes, #1 tram line terminal station is here and ferry station as well. Few cafes with home food are very close and have good prices. Communication with Avşar and Harun Bey was quick, no problem at all.
Thank you very much and good luck! :)