I read in one review that host speaks turkish and little english and was not able to communicate with guest. I was able to communicate with him the basic.
Host will not be able to provide you an arsenal of local tips, in my case I'm familiar with Istanbul city, I have been there many times. Noneless my turkish language command is still limited, as a tip if you need recommendation or suggestion from the host try using the airbnb app, the conversation can be translated and the Hakan is very responsive.
By putting that aside, the apartment is located in a trendy and safe neighborhood known to be the center of the textile/fashion industry. Around there tons of restaurants, bars, shopping stores, supermarkets and a mall. The nearest metro station [Osmanbey] is only 8min. walk from the apartment and from this metro station is just few stops from main attractions. You can walk [20min] to Taksim Square.
The room is big, nicely decorated, good bed size. The share bathroom is next door.
Hakan was very flexible with my check and check out, he was able to hold my luggage.
Good value!