Asta and Cetin are great friendly hosts, communication was perfect and very flexible. The help at check-in was helpful too as the place has a flight of stairs and heavy luggage may be tricky. Do remember to ask for their personal city guide, the local food recommendations are spot on!
Please read their listing carefully. The area is vibrant and very close to Istiklal St (massive shopping area) and Taksim Square. There's a lot of life in the area through the night. If you're comfortable with that, then you'd have no trouble and highly recommend their place for a local experience. The place itself is clean and comfortable, and good enough if you're out in the city most of the time.
Durumzade right in front is legit. Must try.