Merhaba!
Han is a great host, that can help you with all your needs, and even more (my debit-card was blocked by ATM, and Han figure out and help me with this problem) :)
The flat located in most wonderful zone of Istanbul, and i totally recommend to choose this flat, in front of all. It's really nice to walk around and see the ancient houses and of course Galata tower.
The flat have almost all that you need to have a relax after good walking in the city (btw, i walked around 60km+ for 7 days), or during netflix&chill at pandemic time. Flat also located near Istiklal street, which have many shops to visit if you fly for shopping. At the end of the street, where flat is located - you can find a wonderful vinyl store "Analog Kultur", and also there are many great vintage stores through this street.
Projector in the flat have very good image quality, even with daylight. Sound speakers not great, but not bad either. Projector works with xiaomi mi tv stick with Android TV OS, so there are possibilities to install apps like Spotify or other netflix-like-service (netflix is pre-installed), or just send video through Chromecast (but you will need app like VLC installed on both of devices, if you want to "share" media from "storage").
So, have a great time at Istanbul!