A very clean, simple and convenient location for the exploration of Istanbul. Luleci Caddesi where the apartment is located is a lovely street - there is a handful of coffee shops and artisanry workshops around. Unlike Istiklal, the street is not too noisy, although it is not too quiet either, but it is what you'd expect from Beyoglu, i guess.
The host was very nice and helpful, gave us some recommendations, and was always in touch. And a great bonus to the place is - you can leave yout bags if your flight is later then check out. really greatful for that.
Definitely recommend it.