the apartment is very close located to many restaurants, cafes and shopping streets. I recommend walking 2 min up to the Main Street instead of calling a taxi right to the apartment, since it is located uphill and most taxi drivers take way longer than 2 minutes because of the street structure of Istanbul.
The apartment itself ist very nice and cozy. The host and his mom are friendly people who are supportive and communicative. Apartment was clean and we had all we needed. We loved staying there and can recommend!